Week 3-LEARNING TASK 1: Title: "Choose carefuly"
Directions: Read and analyze the questions and choose the letter of the best answer.
1. Which has more momentum, a large truck moving at 30 km/h or a small truck moving at 30 km/h?
A. large truck B. small truck
C. both have the same momentum D. none of the above
. Which of the following has the greatest momentum?
A. A boat sailing in the sea
B.A car going down the hill
An airplane parked on a hangar
D. A skater moving slowly on a flat road
. Rayleigh is moving with a velocity of 2 m/s. After he bumped into another person his velocity decreases.
What causes the sudden change in his velocity?
A. acceleration
5. impulse
C. inertia
D. momentum
. A Mars rover is tested on Earth at a speed of 25 km/h. When it travels as fast on Mars, what will happen to its
momentum?
. increase
B. remains the same C. decrease
D. depends on the gravity on Mars
. Why should truck drivers not drive with a high speed?
A. Because it willlead to accident.
. Because the truck will have a hard time to stop.
C. Because high speed and great mass cause great momentum.
D. All statements are correct.
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