1. A ball whose kinetic energy is E, is projected at an angle of 45 to the horizontal. The kinetic energy of the ball at the highest point of its flight will be (2002) 1) E 2) E/2 3) E/2 4) zero 2. From a building two balls A and B are thrown such that A is thrown upwards and B downwards (both vertically). If V and V, are their respective velocities on reaching the B. ground, then (2002) 1) V>V B 2) V = V, 3) V, > V, 4) their velocities depens on their masses 3. If a body looses half of its velocity on penetrating 3cm in a wooden block, then how much will it penetrate more before coming to rest ? (2002) 1) 1 cm 2) 2cm 3) 3 cm 4) 4 cm 4. Speeds of two identical cars are u and 4u at the specific instant. The ratio of the respective distances in which the two cars are stopped from that instant is (2002) 2) 1:4 3) 1:8 4) 1: 16 5. A car moving with a speed of 50 km/hr, can be stopped by brakes after at least 6 m. If the same car is moving at a speed of 100 km/hr, the minimum stopping distance is (2003) 1) 12 m 2) 18 m 3) 24 m 4)6 m