Question

The kinetic energy of an 1100-kg truck is 4.6 x 10^5 J. What is the speed of the truck?

PLEASE ANSWER ASAP AND CORRECTLY

Answer 1

Answer:

The speed of the truck is 460,000.

Explanation:

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Answer 2

Given: The kinetic energy of an 1100-kg truck is 4.6 x 10^5 J.

To find: We have to find the velocity or speed of the truck.

Solution:

Kinetic energy is the energy of a moving substance.

It can be given as-

$u = \frac{1}{2} m {v}^{2}$

Where u is the kinetic energy which is equal to 4.6 x 10^5 J.

m is the mass of the truck which is equal to 1100 kg.

v is the velocity of the truck.

$4.6 \times {10}^{5} = \frac{1}{2} \times 1100 \times {v}^{2} \\ {v}^{2} = 836.36 \\ v = 29$

The speed of the truck is 29km/hr.