Question

An object starts from rest and accelerates at 50 x 10 km/h for 10.0 s. It then travels at constant velocity for 12.05.Question 3What is the velocity of the object at 10.0 s in m/s^2Round your answer to 3 significant figures.Question 4How far has the object travelled in 10.0 S?Round your answer to 3 significant figures.

Answer 1

3.

Vf = v0 + a t

Where:

vf = final velocity

v0= initial velocity = 0

a = acceleration = 50 x 10^6 km/h2

t= time = 10 s

First, express the acceleration in m/s^2

Since :

1 km/h^2 = 7.72 m/s2

50x10^6 km/h2 = 38580.24 m/s^2

Vf = 0 + 38580.24 m/s^2 * 10 s

Vf = 385,802.469 m/s

4.

Distance = speed * time = 385,802.469 m/s * 10s = 3,858,024.691 m