A 0.750 kg billiard ball, is thrown at a 0.050 kg golf ball. The Billiard ball is moving at 22 m/s to the right. After the billiard ball hits the golf

ball, the golf ball moves moves at 54.38 m/s to the right.

a)With what velocity was the golf ball initially moving?

b)With what velocity was the billiard ball moving after the collision?

3. a lunar exploration vehicle was created by a research team. it weighs 3,000 kg on the earth. it needs an acceleration of 10 m/s2 on the moon. in order to have the same acceleration, what will be the net force acting on the vehicle on the earth?

The dipole moment of the water molecule (h2o) is 6.17x10^-30 c.m. consider a water molecule located at the origin whose dipole moment p points in the +x-direction. a chlorine ion ( of charge-1.60x10^-19c , is located at x=3.00x10^-9m . assume that is much larger than the separation d between the charges in the dipole, so that the approximate expression for the electric field along the dipole axis can be used. a) find the magnitude of the electric force that the water molecule exerts on the chlorine ion. b) what is the direction of the electric force. -x-direction or +x-direction c) is this force attractive or repulsive?

The strong nuclear force acts over a small distance than the electrostatic force. true or false