Midterm Last Review 2025

According to the graph, what is the average speed of the person between 5 and 10 seconds?

• 0 m/s

• 1 m/s

• 5 m/s

• 10 m/s

If you drop a feather and a hammer on the Moon, which will hit the ground first?

• the feather

• the hammer

• They will hit the ground at the same time.

• It is difficult to determine without more information.

What is the standard acceleration due to gravity on the surface of the Earth?

• 9.8 m/s²

• 12 m/s²

• 15 m/s²

• Varies with location

Mechanical advantage is a measure of how much a machine multiplies the input

• efficiency.
• force.
• power.
• work.

Emma is curious about how her television works. She learns that a television transforms electrical energy into what other kinds of energy?

• Light, thermal, and sound

• Thermal, chemical, and solar

• Sound, mechanical, and electrical

• Light, chemical, and mechanical

The transfer of heat energy from the sun to the earth occurs through _______________, which involves electromagnetic waves?

• radiation

• convection

• conduction

• greenhouse effect

The specific heat of copper is 0.09 cal/g°C. How much heat(Q) is absorbed when a 20 g piece of copper is heated from 25°C to 75°C? Q=mcat

• 90 J

• 9 J

• 0.9 J

• 45 J

Determine the gravitational potential energy of a truck with a mass of 3,000 kg that is positioned on a hill 80 meters above the ground. Use the formula PE = mgh.

• 2,352,000 J

• 2,400,000 J

• 2,352 J

• 240,000 J

A 70kg person is cycling at 5m/s. How much kinetic energy do they have? K.E. = 1/2 m * v2

• 875 J

• 1750 J

• 1225 J

• 2450 J

What does the concept of inertia refer to?

• the resistance of an object to change its state of motion

• the position of an object in space

• the rate of change of velocity

• the velocity of an object in a given direction