The time of ascent is directly proportional to
initial velocity
final velocity
acceleration due to gravity
time of flight
A body is projected horizontally with velocity 196 ms-1 from height 400m. What is the time to reach the ground?
5s
9s
15s
20s
Which among the following is the expression for maximum height travelled by an object?
ut + ½at2
u/g
u2/2g
2as
A stone released with zero velocity from the top of tower reaches the ground in 4s. The height of the tower is about
20m
40m
80m
160m
The time taken by a body, which is falling down to reach the surface of earth is known as
Time of ascent
Time of descent
Time of fall
Time of lifting
What is the final velocity of a body, which is fell down from a height of 5m?
40m/s
30m/s
20m/s
10m/s
An aeroplane flying horizontally with a speed of 360km/h releases a bomb at a height of 490m from the ground. When will the bomb strike the ground?
8s
6s
7s
10s
Time taken by a freely falling body to touch the ground is called
Time of flight
Time period
For downward motion, the value of ‘g’ is taken as
+ve
–ve
0
1
For an object moving upwards, the value of final velocity will be
9.8
1/2
1/4