1021. Car P moving at 45m/s chases another car Q moving at 70m/s ahead of it in the same direction A man in car p fires a bullet at car Q. If muzzle speed of bullet is 80m/s, the speed with which bullet hits car Q is :

A. 25m/s
B. 35m/s
C. 55m/s *
D. 105m/s

1022. A straight road leads a car from one station to another. The first half of the distance is traveled at a speed of 60 km/hr, while the second half is traveled at a speed of 90 km/hr. The engine’s normal speed is:

A. 72km/hr *
B. 75km/hr
C. 78km/hr
D. None of the above

1023. In just 30 seconds, a train will pass through a tunnel. At the tunnel’s entrance and exit, the train is traveling at 36 and 54 kilometers per hour, respectively. Assuming speed increase stays steady , the length of the passage is :

A. 350 m
B. 360 m
C. 375 m *
D. 400 m

1024. A cyclist starts at rest and accelerates uniformly. The uniform acceleration is as follows if he travels 2.6 meters in seven seconds:

A. 0.3m/s2
B. 0.4m/s2 *
C. 0.5m/s2
D. 3.0m/s2

1025. A body moving at the same rate of acceleration travels 15 meters in 5 seconds and 25 meters in 10 seconds. The body’s uniform acceleration is:

A. 1.0m/s2
B. 2.0m/s2 *
C. 2.5m/s2
D. 3.0m/s2

1026. A particle begins at rest and moves at a constant speed over x1 in the first second, x2 in the third, and x3 in the fifth seconds. The ratio X1/X2 is:

A. 3/5
B. 5/9 *
C. 9/25
D. 25/81

1027: From a standstill, a car accelerates at a constant rate of 2.0 m/s2 for some time. Then it restart at a consistent pace of 4m/s2 and stops in the event that the vehicle stays moving for three seconds :

(I) The automobile can go as fast as:

A. 2.0 m/s
B. 4.0 m/s *
C. 6.0 m/s
D. 8.0 m/s

(II) The total distance travelled by the car is :

A. 4.0 m
B. 6.0 m *
C. 8.0 m
D. 9.0 m

1028. A car moving with a velocity of 40 m/s can be stopped in 50 m distance when brakes are applied. If the speed of the car is 60m/s and same retardation is applied the distance travelled by the car before coming to rest is nearly equal to :

A. 75 m
B. 112 m *
C. 145 m
D. 200 m

1029. A vehicle moving with speed can be halted in least distance x when brakes are applied. The minimum distance over which the vehicle can be stopped would take the following value if the speed increased by n times:

A. x/n
B. nx
C. x/n2
D. n2x *

1030. A particle moving along a straight line path crosses a fixed point and the stop watch is started . The particle is seen to travel 180cm in first 3 seconds and 220cm in the next 5 seconds. The velocity of the particle at the end of 9 seconds would be :

A. 20 cm/s
B. 30 cm/s *
C. 36 cm/s
D. 45 cm/s