Question
1. A motorcycle with an initial velocity of 5m/s east accelerates at 2 m/s east. How long will it take the motorcycle to reach a
1. A motorcycle with an initial velocity of 5m/s east accelerates at 2 m/s east. How long will it take the motorcycle to reach a final velocity at 25m/s east?
2. A boat can move a constant velocity of 8km/h in still water. How long will it take for the boat to move 24 km?
3. A rock is thrown straight up with twice the initial velocity of another. How much higher will the first rock be at its apex?
4. A toy car moves 8 m in 4 s at a constant velocity. What is the car's velocity?
5. Can an objects average velocity equal zero, when the object's speed is greater than zero?
6. if a cat needs to increase its speed from 59 km/h to 100 km/h and the engine can provide a maximum acceleration of magnitude 3.8 m/s2. How long will it take to reach its direction?
7. A student drops a pebble from the edge of a vertical cliff. The febble hits the ground 4 s after it was dropped. What is the speed of the pebble just before it hits the ground?
8. If a river flows from west to east with a constant velocity of 1.0 m/s and a boat leaves the south bank heading towards the north with a velocity of 2.40 m/s, then what is the resultant velocity of the boat?
9. A train moves at a constant velocity of 50 km/h. How far will it move to 0.5 h?
10. two spherical objects have masses of 6.3x 103 kg and 3.5 x 104 kg. The gravitational attraction between them is 6.5 x 10-3 N. How far apart are their centers?
11. An elk moving at a velocity of 2 km/h north accelerates at 1.5 km/h2 north for 2.3 seconds until it reacher it's maximus velocity. Calculate it's maximum velocity in km/h
12. A bicyclist moves at a constant speed of 4 m/w. How long will it take for the bicyclist to move 36m?
13. John drove south 120 km at 60 km/h and then east 150 km to 50 km/h. Determine the average speed and the magnitude of the average velocity for the whole journey.
14. Two spherical objects have masses of 9.5 x 108 kg and 2.5 kg. Their centers are separated by a distance of 2.5 x 108 m. Find the gravitational attraction between them.
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