Question text
A 600-g ball A is moving with a velocity of magnitude 5 m/s when it is hit by a 1-kg ball B as shown which has a velocity of magnitude 3 m/s. Knowing that the coefficient of restitution is 0.7 and assuming no friction, determine the following:

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Explain the consequences of this addiction to the brain tissue

Can anybody me with this? ? (picture included.)