Question

A student observes an 8.0-kilogram shopping cart accelerate uniformly across a parking lot. It reaches a speed of 4.0 meters per second in 0.5 seconds. What is the magnitude of the force that causes the shopping cart to accelerate?

Answer 1

Answer:

F = 64 N

Explanation:

Given that,

Mass of the shopping cart, m = 8 kg

Initial speed of the shopping cart, u = 0

Final speed of the shopping cart, v = 4 m/s

Time, t = 0.5 s

We need to find the magnitude of the force that causes the shopping cart to accelerate. The force is given by the formula as follows :

$F=ma\\\\F=\dfrac{m(v-u)}{t}\\\\F=\dfrac{8\times (4-0)}{0.5}\\\\F=64\ N$

So, the magnitude of force is 64 N.