Question

A van had an initial velocity of 10ms -1 and accelerates for 20 seconds at a rate of 1ms -2. What is its final velocity?

Answer 1

To find the final velocity of the van, we can use the kinematic equation:

v = u + at

Where: v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time.

Given: u = 10 m/s (initial velocity), a = 1 m/s² (acceleration), and t = 20 s (time).

Substituting the given values into the equation, we have:

v = 10 + 1 * 20

Simplifying the equation:

v = 10 + 20

v = 30 m/s

Therefore, the final velocity of the van is 30 m/s.