Question

A bus is moving at a speed of 20 m/s and accelerates at the rate of 2 m/s². Then the distance covered by the bus in the 5th second is
a)19m
b)29m
c)39m
d)49m​

Answer 1

Answer:

thanks thanks mam a few questions regarding to job

Explanation:

49

Answer 2

This is an example of this question solve like this.

A bullet is moving at a speed of 367m/s when it embeds into a lump of moist clay. The bullet penetrates for a distance of 0.0621m. Determine the acceleration of the bullet while moving into the clay. (Assume a uniform acceleration.)

A

1.08×106 s2m

B

−1.08×106 s2m

C

−1.08×108 s2m

D

−1.08×107 s2m

Medium

Answer

Correct option is

B

−1.08×106 s2m

Here, initial velocity of bullet is u=367m/s and final velocity is v=0m/s.

Distance traveled by bullet is d=0.0621m

If a be the acceleration of bullet.

Using v2−u2=2ad

02−(367)2=2a(0.0621)

⟹ a=−1.08×10−6m/s2

(negative sign indicates deceleration of bullet means it slows down).