3 years ago

What are two ways to increase frictional force?

1 answer:

7 0

Ways to increase friction - increase the area of contact - increase the roughness of the contact materials - dry up or take away any lubricant - increase the pressure on the contact

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Triss [41]

Answer:

Jim's kinetic energy is 54.67 J.

Explanation:

Given that,

Mass, m = 15 kg

Velocity, V = 2.7 m/s

We need to find the Jim's kinetic energy. We know that when the object is in motion, it has kinetic energy. This energy is given by :

$E=\dfrac{1}{2}mv^2$

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3 years ago

A 1400-kg car is moving at a speed of 35 m/s. How much kinetic energy does the car have (in Joules)?

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Answer:

857.5Kjoules

Explanation:

Using K. E=1/2 Mv^2

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