A motorcycle is being driven at a speed of 20 ms-¹
when break are applied to bring it to rest in five
second the acceleration produced in this case will
be
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1
Answer:
Car acceleration = -4 m/s²
Step-by-step explanation:
We know that,
u = 20 m/s
v = 0 [As it is coming to rest]
t = 5 s
a = ?
From 1st equation of motion we get,
v = u + at
Putting in the values we get,
0 = 20 + a(5)
5a + 20 = 0
5a = -20
a = -20/5
a = -4 m/s²
Thus, the acceleration is -4 m/s², here the negative sign represent the deceleration of the vehicle as it is coming to a rest, the acceleration is decreasing and in this case acceleration is opposite to the car.
Thus,
Car acceleration = -4 m/s²
Hope it helped and believing you understood it........All the best
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