18
D. None of the above.
Part4: True/False (If your answer is F, then try to correct the statement)
1. Velocity is the same as speed.
A. True
B. False
2. Velocity is always constant.
A. True
B. False
3. Velocity is a scalar and speed is a vector quantity.
A. True
B. False
4. Uniform motion is motion along a straight line of constant slope.
A. True
B. False
5. The average speed and instantaneous speed are the same.
A. True
B. False
Part6: Exercises
1. A driver covers a distance of 300 km in a time of 2.5 hours. What is the average speed for this
trip?
2. A driver drives for 4.5 hours at an average speed of 65 km/h. What distance does he travel in this
time?
3. A student walks a distance of 320 m with an average speed of 1.5 m/s. What time was required to
walk this distance?
4. Starting from rest and moving in a straight line, a runner runs with velocity of 6 m/s in a time of 2
s. What is average acceleration of the runner?
5. The velocity of a train decreases from 40 m/s to 20 m/s in 4 s. What is the average acceleration of
the train?
6. A car is moving at 25 m/s when the driver applies the brakes. If it stops in 3 s, what is its average
acceleration?
7. Convert 0.05 km to centimeters