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- A car moving at 30m/s decelerates uniformly to rest in 6 seconds. The car then
reverses back to its original starting point with a uniform acceleration...(Solved)
A car moving at 30m/s decelerates uniformly to rest in 6 seconds. The car then
reverses back to its original starting point with a uniform acceleration in 6 seconds.
On the axes provided, sketch a velocity – time graph for the whole motion.
Date posted: April 10, 2019. Answers (1)
- An athlete swims from the east end to the west end of a 75 m pool in 25 s and makes the return trip to...(Solved)
An athlete swims from the east end to the west end of a 75 m pool in 25 s and makes the
return trip to the starting position in 28 s. calculate the,
a. Average velocity outwards
b. Average velocity back
c. Average velocity for the roundtrip
Date posted: April 10, 2019. Answers (1)
- A train increases its velocity steadily from 15 m/s to 30 m/s in 1 minute. What is its average
velocity and acceleration during this time?(Solved)
A train increases its velocity steadily from 15 m/s to 30 m/s in 1 minute. What is its average
velocity and acceleration during this time?
Date posted: April 10, 2019. Answers (1)
- Maureen, an automotive engineer, claims her car can go from 0 to 120 km/h in 5 seconds.
Determine(Solved)
Maureen, an automotive engineer, claims her car can go from 0 to 120 km/h in 5 seconds.
Determine
a. The average acceleration of her car
b. The speed of the car in km/h after 2 seconds
Date posted: April 10, 2019. Answers (1)
- A plane flies from Nakuru Airstrip to Kisumu International Airport, a distance of
approximately at 182 km an average speed of 520 km/h. The return trip...(Solved)
A plane flies from Nakuru Airstrip to Kisumu International Airport, a distance of
approximately at 182 km an average speed of 520 km/h. The return trip was made at an
average speed of 728 km/h. Find
a. Total time taken
b. The average speed for the whole journey
c. The average velocity for the whole journey
Date posted: April 10, 2019. Answers (1)
- The average velocity of an airplane is 750 km/h. Determine how long it will take to fly
between Kisumu and Mombasa, a distance of 832 km.(Solved)
The average velocity of an airplane is 750 km/h. Determine how long it will take to fly
between Kisumu and Mombasa, a distance of 832 km.
Date posted: April 10, 2019. Answers (1)
- How far will Elizabeth who is riding her new bike be after 45 minutes if she is riding at an
average speed of 28 km/h?(Solved)
How far will Elizabeth who is riding her new bike be after 45 minutes if she is riding at an
average speed of 28 km/h?
Date posted: April 10, 2019. Answers (1)
- A ball is thrown with an initial velocity of 20 m/s from height of 50 m above the ground in a
horizontal direction. Determine(Solved)
A ball is thrown with an initial velocity of 20 m/s from height of 50 m above the ground in a
horizontal direction. Determine
a. How long it takes to hit the ground
b. The horizontal distance travelled
Date posted: April 10, 2019. Answers (1)
- A stone is thrown horizontally from a height of 45 m and covers 30 m before landing. What
was the initial velocity of the stone?(Solved)
A stone is thrown horizontally from a height of 45 m and covers 30 m before landing. What
was the initial velocity of the stone?
Date posted: April 10, 2019. Answers (1)
- A swimer takes off straight up from a diving board 1.80 m above water surface in a pool and
falls into the swimming pool. If her...(Solved)
A swimer takes off straight up from a diving board 1.80 m above water surface in a pool and
falls into the swimming pool. If her initial velocity is 5 m/s , determine
a. The highest point above the board
b. Her velocity as she hits the water
c. The time she takes to hit the surface of water
Date posted: April 10, 2019. Answers (1)
- A cat was seen to jump over a chair 1.50 m high. Considering just its vertical motion,(Solved)
A cat was seen to jump over a chair 1.50 m high. Considering just its vertical motion,
a. Calculate its take off vertical velocity
b. How long does it stay in the air?
Date posted: April 10, 2019. Answers (1)
- Judith tosses a coin straight up in probability exercise. At what velocity must the coin be
tossed for it to rise to 2.5 m from the...(Solved)
Judith tosses a coin straight up in probability exercise. At what velocity must the coin be
tossed for it to rise to 2.5 m from the point of toss?
Date posted: April 10, 2019. Answers (1)
- Standing on a cliff, a student releases a stone. Given that the cliff is 220 m high, calculate(Solved)
Standing on a cliff, a student releases a stone. Given that the cliff is 220 m high, calculate
a. The velocity of the stone at the foot of the cliff
b. The time taken by the stone to hit the foot of the cliff
Date posted: April 10, 2019. Answers (1)
- Grace is driving at a velocity of 10 m/s. She suddenly brakes to avoid hitting a goat crossing
the road. If the car stops after a...(Solved)
Grace is driving at a velocity of 10 m/s. She suddenly brakes to avoid hitting a goat crossing
the road. If the car stops after a distance of 50 m, determine the deceleration of the car.
Date posted: April 10, 2019. Answers (1)
- A trolley covers a distance of 275 m moving with uniform acceleration of 10 ms-2. If its initial velocity was 30 ms-1. Calculate its final...(Solved)
A trolley covers a distance of 275 m moving with uniform acceleration of 10 ms-2. If its initial velocity was 30 ms-1. Calculate its final velocity.
Date posted: April 10, 2019. Answers (1)
- The velocity of a bike increases from 20 m/s to 30 m/s through a distance of 100 m.
Calculate the time the bike takes to reach...(Solved)
The velocity of a bike increases from 20 m/s to 30 m/s through a distance of 100 m.
Calculate the time the bike takes to reach this velocity
Date posted: April 10, 2019. Answers (1)
- Using a ticker-timer that vibrates at a frequency of 50 Hz, a student carried out an experiment
to study the motion of a trolley.The figure below...(Solved)
Using a ticker-timer that vibrates at a frequency of 50 Hz, a student carried out an experiment
to study the motion of a trolley.The figure below shows a tape chart consisting of 10-tick strips that
he obtained.
Calculate the
a. total distance travelled
b. average velocity
c. acceleration of the trolley
Date posted: April 10, 2019. Answers (1)
- The figure below shows ticker tape chart for a trolley pushed up a slope. Every section of the tape
contains 5 spaces. If the ticker-tape timer...(Solved)
The figure below shows ticker tape chart for a trolley pushed up a slope. Every section of the tape
contains 5 spaces. If the ticker-tape timer has a frequency of 50 Hz, determine the
acceleration of the trolley.
Date posted: April 10, 2019. Answers (1)
- The figure below shows a ticker-tape for trolley moving over an inclined plane, a frequency
of 50Hz.(Solved)
The figure below shows a ticker-tape for trolley moving over an inclined plane, a frequency
of 50Hz.
Calculate,
a. Initial velocity
b. Final velocity
c. Acceleration of the trolley
Date posted: April 10, 2019. Answers (1)
- The ticker-tape in Figure below was produced by a toy car moving over an inclined plane.
If the ticker-tape timer produced 100 dots per second, find...(Solved)
The ticker-tape in Figure below was produced by a toy car moving over an inclined plane.
If the ticker-tape timer produced 100 dots per second, find the
a. Initial velocity at A
b. Final velocity at B
c. Acceleration of the toy car.
Date posted: April 10, 2019. Answers (1)