Question

Mr. Henderson's imaginary) Porsche accelerates from 20 m/s to 60 m/s in 4 seconds. Its acceleration is

Answer 1

Answer:

$a = 10$

Step-by-step explanation:

Given

$Initial\ Velocity\ (u) = 20m/s$

$Final\ Velocity\ (v) = 60m/s$

$Time = 4s$

Required

Determine the acceleration

This question will be answered using the first equation of motion.

$v = u + at$

Substitute values for v, u and t

$60 = 20 + 4 * a$

$60 = 20 + 4 a$

Subtract 20 from both sides

$60 - 20= 20 -20 + 4 a$

$40= 4 a$

Divide both sides by 4

$10 = a$

$a = 10$

Hence, the acceleration is 10m/s/s