When did galileo discover projectile motion?

an 1800 kg car is approaching a stoplight at 15 m/s. what is the deceleration of the car if the brakes provide a stopping force of 4520N

The magnitude of a velocity vector is called speed. suppose that a wind is blowing from the direction n45°w at a speed of 40 km/h. (this means that the direction from which the wind blows is 45° west of the northerly direction.

In the deep space between galaxies, the density of atoms is as low as 106 atoms/m3, and the temperature is a frigid 2.7 K. What is the pressure (in Pa) ?

A rock is dropped from a sea cliff, and the sound of it striking the ocean in heard 3.0. s later. If the speed of sound is 340m/s, how high is the cliff? The answer is not 1020m.

6. Two kids are roller skating. Amy, with a mass of 55 kg, is traveling forward at 3 m/s. Jenny, who has a mass of 40 kg, is traveling in the opposite direction at 5 m/s.

As you travel up into the mountains, why do your ears pop

Which statement describes potential energy?

Two laptop computers each have a mass of 2 kg. If they are 0.5 m apart on a desk, what is the gravitational force between them? G = 6.67 * 10-11 N⋅ (m/kg) 2

What is Newton's second law of motion?

a father has brown hair (B), but the offspring have red hair (a recessive trait), like their mother (b). How is this possible?