analyze followings. put ✓ if the gravitational force is applied and × if not.

1. We can walk on the surface.
2. A boy skateboarded on the street.
3. Shiella rubs her hands to produce heat.
4. A boy lights a lamp with a matchstick.
5. My friend drill a nail into the wall.
6. A driver applies the brakes and slows down the velocity of the bus.

pls po pahelp asap.​