A 25 kg girl is riding a 5 kg bike with a velocity of 5 m/s going East. What is the total momentum of a girl and a bike together?*1 point200 kg m/s125 kg m/s100 kg m/s150 kg m/s

A girl and her bicycle have a total mass of 45 kg. At the top of the hill her speed is 5.0 m/s. The hill is 15 m high and 115 m long. If the force of friction as she rides down the hill is 21 N, what is her speed at the bottom?

A woman and her motorbike together have a mass of 220 kg. The bike accelerates at 5 m/s². What is the force from the motorbike's engine?

What is the momentum of a 45 kg girl running at 4 m/s?

A car of mass 2000 kg which is travelling at 10 m/s crashes into a car of the same mass which is travelling at 5 m/s in the same direction.  Calculate the total momentum of both cars after the collision.10,000 kg m/s40,000 kg m/s20,000 kg m/s30,000 kg m/s2A toy train of mass 0.5 kg which is travelling at 0.5 m/s crashes into a train of mass 1.0 kg which is travelling at 0.25 m/s in the opposite direction.  Upon colliding, the trains stick together.  Calculate their final velocity.0.5 m/s0.33 m/s0.17 m/s0 m/s3A car of mass 1500 kg which is travelling at 10 m/s is involved in a head-on collision with a car of mass 2000 kg which is travelling at 8 m/s.  Upon colliding with one another, both cars stick together.  With what velocity (magnitude and direction) will they move after the collision?8.86 m/s (in the direction in which the 2000 kg car was originally travelling)0.29 m/s (in the direction in which the 2000 kg car was originally travelling)8.86 m/s (in the direction in which the 1500 kg car was originally travelling)0.29 m/s (in the direction in which the 1500 kg car was originally travelling)4An airplane of mass 50,000 kg accelerates along a runway from rest to a velocity of 100 m/s in 20 seconds.  Calculate the average resultant force which was acting on the plane during this time.100,000,000 N250,000 N0.04 N10,000 N5Which of the following is equal to the average resultant force which acts on an object while it is accelerating (or decelerating)?Its change in momentum multiplied by the time for which the force was actingThe time for which the force was acting divided by its change in momentumIts rate of change of momentum (its change in momentum divided by the time for which the force was acting)Its change in momentum (the difference between its initial and final momenta)6The action of a resultant force of 5 kN causes the momentum of a lorry to increase from 100,000 to 120,000 kg m/s.  For how long was this resultant force acting on the lorry?44 seconds4 seconds24 seconds20 seconds

Which of the following has the greatest momentum?Select an answerAA car moving at 10 m/s with a mass of 1000 kgBA truck moving at 5 m/s with a mass of 5000 kgCA motorcycle moving at 20 m/s with a mass of 200 kgDA bicycle moving at 30 m/s with a mass of 50 kg