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c. there is a force towards motion.
d. there is only gravitational motion.
5. Two masses m 1 and m 2 are dropped from heights h 1 and h 2. The ratio of time taken by them to fall
on the Earth’s surface is
1/2
a. (h 1/h 2)
1/2
b. (m 1/m 2)
1/2
c. (h 2/h 1)
1/2
d. (m 2/m 1)
6.
Two train 100 m and 50 m in length are running in opposite direction with velocities 40 km/h
and 20 km/h. The time when they will completely cross each other
a. 4 s.
b. 6 s.
c. 8 s.
d. 9 s.
7. ABCD is a square of side a. A body starts from A and reaches D
through indicated path. The ratio of displacement to distance
travelled is
a. ½
b. √2
c. 2
d. 1/√2
8.
A food packet is released from a helicopter rising steadily at the speed of 12 m/s. After 2 seconds
2
the velocity of the packet is (g=9.8 m/s )
a. –12 m/s.
b. -7.6 m/s.
c. 7.6 m/s.
d. 12 m/s.
9.
2
The position coordinates of a moving body are given by x=4+10t+15t . The acceleration
is (Where x is in meters and t is in seconds.)
2
a. 45 m/s .
2
b. 40 m/s .
2
c. 35 m/s .
2
d. 30 m/s .
10.
The velocity-time graph of a body moving in a straight line is shown in figure. The distance and
displacement traveled by the body in
6 seconds are, respectively:
a) 8 m, 8m.
b) 16 m, 16 m.