Which is an example of projectile motion?

a person throwing a rock

a child swinging on a swing set

an athlete running on a track

a teacher picking up a pencil

During a compression test, a cylinder has 40 percent of the specified compression reading. When the technician performs a wet test, the compression reading on this cylinder has 75 percent of the specified reading.

In which layer does erosion take place? And why?

How does friction apply a force to a moving object?

Volcanic ash and sulfur dioxide spewed out of Mt. Pinatubo in 1991. These materials can reflect incoming solar radiation. Over the next few years, what do you think happened?

If we have several different light bulbs connected to a battery in series, then ___. The resistance will be the same across each bulb. The current will be the sum of individual voltages across each bulb. The current will be the same across each bulb.

Contrast balanced and unbalanced forces.

A wave will travel only as long as it has energy

a box sliding on a frictionless surface when it suddenly begins to rain heavily. if the downpour of rainfall falls vertically into the box, gradually filling it, what would happen to the speed of the box

Which would fall with a greater acceleration in a vacuum-a leaf or a stone?

A force acts on a 5kg object at rest. How fast will the object accelerate on a frictionless surface? A.) 4 m/s^2 B.) 15 m/s^2 C.) 25 m/s^2 D.) 100 m/s^2