engineering recuitment Indian Coast Guard Yantrik Mock Test 2024 Engineering Mechanics Kinematics and Kinetics
The initial velocity of a block is 20 m/s. The coefficient of friction between the block and surface is 0.3. If the surface is inclined at 30° to horizontal, then time taken for the velocity to drop to 38 m/s is. (g = 10 m/s2)
1
3.5 s
2
2.5 s
3
7.5 s
4
9 s