Question

aft
d. A van of mass 1200 kg is moving with speed 90 km/h. It is brought to rest in 3
seconds by applying brakes, calculate [8.33 m/s2, 10000 N, 37.5 m)
i. retardation of the van.
ii. force applied to it to bring to rest.
ui, distance travelled by the van before it came to rest.
e. A stone is dropped in a well. If the stone takes 3 s to reach the water surface.
Calculate
[44.1 m, 29.4 m/s]
i. the depth of the water surface in the well
ii. the velocity with which the stone strikes the water.
f. A stone is thrown vertically upward with the velocity of 40 m/s. Calculate
i. the velocity of stone after 1.5 s
ii. the time taken by the stone to reach the maximum height
iii. the total distance travelled by the stone before it returned to the earth
surface,
[25.3 m/s, 4.08 s, 163.2 m]
g. A stone is projected vertically up with the velocity of 19.6 m/s. Calculate
i. the time taken by the stone to reach the maximum height.
ii. total height covered by the stone.
[2 s, 39.2 m
h. A stone is projected vertically up with the velocity of 19.6 m/s. Calculate
conob the maximum height​

Answer 1

hope it helps you ❤️ ...