Question

A car starts at rest and accelerates at a rate of 4 m/s^2. How far does the car travel in 5

seconds? Why?

A) 10 m
B) 20 m
C) 50 m
D) 100m

Answer 1

C. 50m

Step-by-step explanation:

Given parameters:

Initial velocity = 0m/s

Acceleration = 4m/s²

Time of travel = 5s

Unknown:

distance covered = ?

Solution:

To solve this problem, we use the expression below;

S = ut +
`(1)/(2)` at²

S is the distance

u is the initial speed

t is the time

a is the acceleration

S = (0x 5) +
`(1)/(2)` x 4 x 5² = 50m