Class XI - PHYSICS - PROJECTILE MOTION - (Assignment)
image credits: cmglee (Wikimedia) |
1. An aeroplane is flying in horizontal direction with a velocity of 600 km/h and at a height of 1960 m. When it is vertically above the point A on the ground, a body is dropped from it. The body strikes the ground at a point B. Calculate distance AB.
[Answer: 3333.3 m]
2. A body is thrown horizontally from the top of a lower and strike the ground in 3 seconds at an angle 45° with the horizontal. Find the height of the lower and the speed with which it was projected.
[Answer: 44.1 m , 29.4 m/s ]
3. An air craft is flying at a height of 3,500 m above the ground. If the angle subtended at a ground observation point by the air craft positions 10 s apart is 30° while passing over his head, what is the speed of the air craft?
[Answer: 187.5 m/s ]