Two metal balls are moving toward each other along the x axis with the same initial speed of 4.2 m/s. Ball A with 3 times the mass of ball B is moving to the right while Ball B is moving to the left...

Two metal balls are moving toward each other along the x axis with the same initial speed of 4.2 m/s. Ball A with 3 times the mass of ball B is moving to the right while Ball B is moving to the left...

A 0.45 kg fire-cracker is at rest when it explodes into four pieces. 1: 0.15 kg - 15 m/s due east 2: 0.075 kg - 20 m/s due west 3: 0.05 kg - 30 m/s due north 4: 0.175 kg...

A 105 kg astronaut wearing a 35 kg jetpack is moving away from the space shuttle at 3.5 m/s horizontally to the right. The jetpack then pushes pushes the pack towards the shuttle with a force of 150...

An ice puck travelling due east at 3.6 m/s on frictionless ice collides head on elastically with an identical ice puck travelling due west at 5.2 m/s. Find the velocities of the two pucks after the...

A 0.76 kg fireworks rocket moving at a speed of 32 m/s breaks into two pieces as the result of an explosion. After the explosion a 0.28 kg piece moves with a speed of 42 m/s in the original direction...

What is the momentum of a system of two particles with these respective masses and velocities: 3.75 kg moving north at 5.6m/s and 4.2 kg moving northwest at 2.3m/s?

Speed of the tractor immediately the rope be comes taut

a) a 0.50 kg ball thrown straight up with a velocity of 30 m/s. b) a 2000 kg railway car moving south at 10 m/s. c) an electron of mass, 9.1 x 10-31 kg moving at a velocity of 1 x 107 m/s...

If I had an object of 5kg, which travels at a constant speed of 5 m/s is moving around a circle of perimeter 5m for 1 second. Obviously its speed would equal to 5 m/s however because its displacement...

3. A force of 40N applied at the end of a wire of length 4m and diameter 2mm produces an extension of 0.24mm. Calculate : (1 mark) i) stress on the wire

Rob has a mass of 75 kg and stands on a frozen lake at rest. Suddenly, Rob’s 45-pound dog comes running across the ice at 4.6 m/s and collides with Rob. How fast does Rob and his dog move together...

A freight car with a mass of 3.5 x 105 kg traveling at 5 m/s connects itself to another identical freight car at rest. What is their final speed together after the collision

A 20-gram rubber bullet traveling at 150 m/s hits a stationary 8.5 kg concrete block. If the bullet bounces off of the block in the opposite direction at 100 m/s, what is the final speed of the concrete...

. An astronaut initially at rest in space fires a thruster pistol that expels 35 grams of hot gas at 875 m/s in front of her. If the astronaut has a total mass of 160 kg while wearing her spacesuit,...

Rob has a mass of 75 kg and stands on a frozen lake at rest. Suddenly, Rob’s 45-pound dog comes running across the ice at 4.6 m/s and collides with Rob. How fast does Rob and his dog move together...

what is the momentum of a 70kg athlete jogging in a straight line on level ground at a speed of 6.0 m/s

a baseball pitcher throw a 145 gram fastball at 90 mph if an average batter is able to make contact with the ball for 0.7 milliseconds

a basketball pitcher throw a 145 gram fastball at 90 mph if an average batter is able to make contact with the ball for 0.7 milliseconds

if the cat glove moves back 10 cm while catching the ball how much force did the catcher have to use to stop the ball

If an average batter is able to make contact with the ball for 0.7 milliseconds how much force would it take for the batter to hit the ball outward at 106 mph to hit a home run

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