1. [1]The
velocity of an object can be changed by
(a) changing
the speed (b) changing the
direction of motion
(c) Changing
both the speed and direction of motion
(d) All (a),
(b) and (c) are true.
2. [1]A body
displaces through 30 m eastward and 20 m
northward. What is total displacement
3. [2]Tabulate diffrenece between Distance and
Displacement (At least three.)
4. [2]A car
traveling at 20 km/h speeds up to 60 km/h
in 6 second. What is its acceleration?
5. [2]An
athlete completes one round of a circular track of diameter 200 m in 40 s.
What will be the distance covered and the displacement at the end of 1 minutes
40 s?
6. [2]Abdul,
while driving to school, computes the average speed for his trip to be 20 km h–1.
On his return trip along the same route, there is less traffic and the average
speed is 40 km h–1. What is the average speed for Abdul’s trip?
7. [2]Joseph
jogs from one end A to the other end B of a straight 300 m road in 1 minutes 30
seconds and then turns around and jogs 150 m back to point C in another 1
minute. What are Joseph’s average speeds and velocities in jogging
(a)
From A to B and (b) from A to C?
8. [3]A body covers half the distance with a velocity of 15 m/s and the
remaining half with a velocity of 30 m/s/ Find the average velocity.
9. A body
covers one third of the distance with a velocity of 60m/s and the second
one-third a velocity of 30 m/s/ and the last one-third with a velocity of 40
m/s. Find the average velocity.
10. A bus
decreases its speed from 80 km h–1 to 60 km h–1
in 5 s. Find the acceleration of the bus.
11. A train
starting from a railway station and moving with uniform acceleration attains a
speed 40 km h–1 in 10
minutes. Find its acceleration.
12. [2]Define
(a)Velocity (b) Acceleration(c)Uniform and Non-Uniform
Acceleration
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