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1. The Norway, a passenger cruise ship, is more than 300 m long. It has a mass of 6.9 x 107 kg,
and can reach a top cruising speed of 33 km/h. Calculate the amount of momentum it has.
(6.33 x 108 kg*m/s)
2. The first human-made satellite, Sputnik I, had a mass of 83.6 kg and a momentum with a
magnitude of of 6.63 x 105 kg*m/s. What was the satellite’s speed in km/h? (2.86 x 104 km/h)
3. One of the smallest planes ever flown was the Bumble Bee II, which had a mass of 183 kg. If
the pilot’s mass was 76 kg, what was the velocity of the plane and pilot if their momentum was
of 2.08 x 104 kg*m/s? (80.3 m/s)
4. The world’s most massive train ran in South Africa in 1989. It was over 7 km long. If it
traveled 535 miles in 22.7 hours, and the train’s average momentum was 7.32 x 108 kg*m/s,
what was its mass? (6.94 x 107 kg)
5. In 1994, a tower 22.13 m tall was built of Lego blocks. Suppose a block with a mass of 2 g is
dropped from the top of this tower. Ignoring air resistance, calculate the Lego piece’s momentum
at the instant the piece hits the ground. (0.0416 kg*m/s)
6. A pitcher claims he can throw a 0.145-kg baseball with as much momentum as a 3.00-g bullet
moving with a speed of 700 miles per hour. What must the baseball’s speed be if the pitcher’s
claim is valid? (6.48 m/s)
7. A bronze statue of Buddha was completed in Tokyo in 1993. It is 35 m tall, and has a mass of
2.03 x 106 pounds. What is the magnitude of the impulse that must act on the statue in order to
increase the speed of the statue from 0 m/s to 0.22 m/s? If the net force acting on the statue is
12.5 kN, how long will it take for the final speed to be reached? (2.03 x 105 N*s, 16.24 s)
8. In 1992, Dan Bozich drove a go-cart at a speed of 78.4 mi/h. Suppose he applies the brakes
upon reaching this speed. If the combined mass of the go-cart and driver is 198 kg, the
decelerating force is 361 N in the opposite direction, and the brakes are applied for 10.3 seconds,
calculate the final speed of the go-cart. (16.3 m/s)
9. In performing the Human Cannonball stunt, the cannon exerts a force of 1580 N on the person
inside. Assuming the person has a mass of 45 kg, and the person is inside the cannon for 0.68
seconds, calculate their speed coming out of the cannon when being shot. (23.9 m/s)
10. The largest steam powered locomotive, built in 1943, is still in operation in the US. Its mass
is 4.85 x 105 kg. Suppose the train is traveling at 19.7 m/s. What force must the engine exert on
the train to increase its speed to 25.2 m/s in 5.3 seconds? (5.03 x 105 N)
11. The most powerful tugboats are built in Finland. They are able to exert a maximum force of
2.83 x 106 N. Suppose one of these tugboats is trying to slow a barge with a mass of 2.1 x 107 kg
and is moving with a speed of 3 m/s. How long (in seconds) must the tugboat exert its force in
order to bring the barge to rest? (22.3 s)
12. The record for the smallest dog is a 113 g terrier. Suppose this dog is running with a speed of
4.4 mi/h when it sees a mouse, and screeches to a halt in 0.81 seconds. What is the force required
to do this? (0.275 N)