A 30 kg child on a skateboard

experiences a 75-N force as shown

F = 75 NOIA

What is the expected acceleration of the

child?

Elements in the same vertical column share similar chemical properties. Which statement best explains this? A. They have the same number of neutrons in their nucleus. B. They have similar physical qualities. C.

A vector makes an angle of 30° with the positive x-axis. Find the work done by the force in moving the object 13 units in the direction of the positive x-axis.

Why does a straw look broken viewed in a glass of water?

What is angular speed for a roller coaster?

When is the only time that an object has no gravitational potential energy

The train traveled 500 kilometers north to Odessa in 2 hours. What's the train's speed? What is the velocity?

Are microwaves and radio waves faster or slower than other types of electromagnetic energy?

If you dive under-water, you notice an uncomfortable pressure on your eardrums due to the increased pressure. The human eardrum has an area of about 70 mm2 (7*10-5m2), and it can sustain a force of about 7 N without rupturing.

Why cant kinetic energy ever be greater than potential energy

For a stationary observer, when the source of a sound is moving, its pitch appears to change.