psoccer.png A 425 g soccer ball traveling horizontally along the ground at 15.0 m/s is kicked in the opposite direction by a player with a speed of 25.0 m/s at an angle of 60.00 up from the horizontal.  If the time of contact between the player and the ball for the kick was 0.025 s, what was the magnitude of the force exerted on the ball?

A 90.0 kg wide receiver traveling east at 15.0 m/s is tackled by a 115 kg linebacker traveling at 8.0 m/s in a direction of 300 west of north.  What direction are the players traveling in just after the tackle? (assume they stick together)

An 125 kg astronaut, floating motionless in space, pushes away a 15 kg toolbox which goes flying off with a speed of 4.0 m/s.  What speed is the astronaut moving after pushing away the toolbox?

A rocket expels 1500 kg/s of propellant at a speed of 4.00×104 m/s.  Determine the force on the rocket.

Determine the linear momentum of a 3.0 kg object traveling at 12.0 m/s.

A 1.0 kg dish falls to the ground and breaks into 3 pieces.  A 0.30 kg piece scatters in the x-direction at 2.0 m/s and a 0.50 kg piece scatters, perpendicular to it, in the y-direction at 1.5 m/s.  What is the magnitude of the velocity of the third piece?

A 35.0 kg boy and 28.0 kg girl stand, on frictionless ice, at the center of an ice skating rink.  The girl pushes the boy away.  How far apart are they after boy has slid 4.0 m from the center of the rink?

p6(3).png For the above molecule, M = 16m, d = 1.0 Å (Å = 10-10 m), and the center of mass lies 0.067 Å from the M mass atom.  Determine the angle q for the molecule.

A  5.00 kg object traveling East at 12.0 m/s undergoes a perfectly inelastic collision with a 3.00 kg object traveling West at 10.0 m/s.  Determine the velocity to the center of mass before and after the collision to show it is constant.

How long does it take a dvd to spin up, from rest, to 675 rpm with an angular acceleration of 32.0 rad/s2?