Question

MARCH - 2020
Velocity-time graph of a ball thrown vertically upwards with an ini
figure.
+ 100
+ SOH
B
C
0
5
10
15
20
- 50
- 100
(a) What is the magnitude of initial velocity of the ball ?
(b) Calculate the distance travelled by the ball during 20 s, from
(c) Calculate the acceleration of the ball from the graph.​

Answer 1

Answer:

(a) initial velocity will increase 9.8 m/s

(b) d=ut+1/2at2 u=0 t =20 s a= 9.8 m/s

0(20) +1/2 9.8(20)2

1/2(9.8×200)

= 186.0 meter

acceleration = 9.8 m/s square