Question

ALLEN
Motion
stone dropped from top of a tower reaches the ground in 4s. The height of the tower is about:
(Take g = 10ms)
(A) 20m
(B) 40m
(C) 80m
(D) 160m
11. A body falls freely from rest. It covers as much distance in the last second of its motion as covered
in first three seconds. The body has fallen for a time of:
(A) 38
(B) 58
(C) 78
(D) 9s
A ball dropped from a height covers half of its total journey from top of a tower in 0.5s. The height
of the to... is: (Take g = 9.8ms)
(A) 4.9 m
(B) 9.8 m
(C) 2.45 m
(D) 8.6 m
A car moving with an initial velocity u is brought to rest by application of brakes which provides
uniform retardation of 2.5ms 2 for 10s. The value of u is:
(Al 20ms 1
(B) 25ms
(C) 30ms
(D) 35ms-​

Answer 1

Answer:

I'm extremely sorry boy

Answer 2

Answer:

for 1) c

2) b

3)c

4)b

I am a allenitie