Question

A 500 kg truck moving at 20m/s experiences a force of 2000N due to brakes in opposite direction, until
the truck stops. Find the truck's:

i. Deacceleration
ii. Time Taken to stop

Answer 1

Answer:

m = 3000 kg

Explanation:

• Therefore, the mass of the car is 3000 kg.

please mark as brainliest answer

Answer 2

Explanation:

Mass of truck (m) = 500 kg

initial velocity of truck (u) = 20 m/s

force applied on the truck in direction of motion

(F) = -2000 N.

(since the force is acting in opposite direction of motion)

hence

acceleration of truck (a) = -2000 / 500 = -4 m/s

( since acceleration = force / mass)

( i ) deacceleration = 4 m/s^(-2)

( ii )

We know that,

final velocity of truck = 0 m/s

hence from the formula:

v = u + at

t = ( v - u ) / a. ( here a is acceleration)

therefore,

t = ( 0 - 20 ) / ( -4 ) = 5 s

hence,

time taken = 5 s

Please mark me as Brainliest, I tried my level best to make it clear and easily understandable and ignore any grammatical mistakes.