The thermal energy used by the tires is 1.14 J.
Here, the thermal energy used will be the work done by Mark.
Given,
Distance = 140 m
Force exerted = 160 N
Thermal energy = ?
We know,
Work = force * displacement
But here the thermal energy of tires is asked.
In this question, the thermal energy used is the energy consumed to do the work.
So, using the formula of work we can find the thermal energy.
W = 160 / 140 = 1.14 J
Therefore the thermal energy used by the tires is 1.14J
To learn more about thermal energy, refer: brainly.com/question/1687193
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"Constant velocity" is another way of saying "zero acceleration".
Answer:
<em>c. tension, gravity, and the centripetal force</em>
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Explanation:
The ball experiences a variety of force as explained below.
Gravity force acts on the body due to its mass and the acceleration due to gravity. The gravity force on every object on earth due to its mass keeps all object on the surface of the earth.
Although the car moves around in circle, centripetal towards the center of the radius of turn exists on the ball. This centripetal force is due to the constantly changing direction of the circular motion, resulting in a force away from the center. The centripetal force keeps the ball from swinging off away from the center of turn.
Tension force on the string holds the ball against falling towards the earth under its own weight, and also from swinging away from the center of turn of the car. Tension force holds the ball relatively fixed in its vertical position in the car.
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