A body starts with a velocity of 20 m/s, accelerates uniformly for a time t, moves with constant velocity for the same time, and

Question

3 years ago

9

A body starts with a velocity of 20 m/s, accelerates uniformly for a time t, moves with constant velocity for the same time, and

finally decelerates to rest, again taking a time t. Given that the final deceleration is three times the original acceleration, and the total distance travelled is 140 m, find t.

Physics

1 answer:

Bezzdna [24] · Answer 1 · 2022-02-03T10:51:04+03:00

Answer:

t=0.14s

Explanation:

t=
 $\frac{s}{v}$ 
t=
 $\frac{20}{140}$ 
Where s= speed
V=distance 
And t=time