A car accelerates along a straight road from rest to 90 km/h in 5.0 s. A) Find the magnitude of its average acceleration. B) Find the velocity of the car at t = 1.0 s, t = 2.0 s and t = 5.0

a)  

b)  

Explanation:

From the question we are told that:

Velocity

Time

a)

Generally From Newton's motion equation for Average acceleration is   mathematically given by

Since its from Rest Therefore

b)

Generally the equation for Average Velocity is mathematically given by

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.