physics test

6.0

A 2.0 kilogram mass is moving with a speed of 3.0 M/S. what is the kinetic energy of the mass

50,000 J

A 1000 kg automobile is traveling at an initial speed of 20 m/s. It is brought to a complete stop in 5 s over distance of 50 m

2000 J

A hydraulic lift used at an automotive repair shop raises a 1000 kilograms car twp meters off of the ground. What is the potential energy given to the car?

7200

A rock climber weighs 550N and is carrying a backpack that weighs 50N. How much total work has been done after she climbs 12m?

2.03m

A student moves a box across the floor by exerting 23.3N of a force and doing 47.2 J of work on the box. How far does the student move the box

The ball's potential is changing to kinetic energy

As a heavy ball rolls down a hill, it goes faster and faster. Which statement is true?

While standing on the skateboard at the top of the hill

Noah carried a skateboard up a hill and then rode the skateboard down the hill. When Noah reached the bottom of the hill, herolled to a stop. When did Noah have the most potential energy?

heat

Sandra measured the temperature of the water in the bowl in the early morning and in the late afternoon everyday for five days. She observed that the temperature of the water was always higher in the late after noon. Which of the following typed of energy was she measuring

the carts mechanical energy is all potential.

Which of the following describes the mechanical energy of a cart at rest at the top of a steep hill.

the cart has a maximum kinetic energy

a cart at the top of a hill is released and rolls down the hill. which of the following describes the energy of the cart just as it reaches the bottom of the hill.

6.00m

a total of 750 J of work was done when a force of 125 N was exerted on a box to move it. How far was the box moved.

12J

if a 6.0 N force is required to move a box through a distance of 2.0m, how much work is done

Ball A has more potential energy than Ball B

the diagram shows two bowling balls of equal mass. Ball A is resting near the edge of a shelf. Ball B is resting on the ground below. Which of these statements vest describes the diagram above?

10,300 J

the potential energy of 77kg diver standing on a 20m high diving tower is 15,4000 J. Two-thirds of the way down during the dive into the pool, his potential energy is 5,100 J. Neglecting air resistance, what is the divers kinetic energy at this point.

100 Joules

what is the kinetic energy of an object with a mass of 10 kilograms traveling at a speed of 10 meter per second. Assume no other forces act on the object

25.0 J

what is the potential energy acquired by an object with a mass of 5.00 kilograms when it is raised 5.00 meters?

when the ball reaches it maximum height

when will a ball have maximum potential energy

lifting a bag of groceries

which of the following is the best example pf work being done on an object.