Question

An 850.0 kg car wants to accelerate from rest to a speed of 18.0 m/s.

Answer 1

Answer:

$1.07*10^5 Joules$

Explanation:

From Kinetic energy K.E = m*$v^2$/2

Where mass of the car, m = 850 kg

velocity of the car, v = 18 m/s

Hence K.E = $850*18^2/2 = 1.07*10^5 Joules$

Also, we can evaluate the given time

time = K.E / Power

= $1.07*10^5 / (50*746)$

= 2.87 secs