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tward4569
tward4569
17.12.2020 • 
Physics

1. If a truck travels west with a constant velocity. The magnitude of the acceleration of the truck is 2. Two displacement parallel vectors in opposite direction have magnitudes of 5 m and 7 m, respectively. When these two vectors are added, the magnitude of the sum ___

3. When a projectile is launched horizontally, the vertical component of a projectile's velocity A) increases by 9.81m/s every second. B) is zero. C) remains constant. D) decreases E) any of the above, depending on position.

4. A tennis ball rolls off the edge of a table. The horizontal component of the ball's velocity remains constant during its entire trajectory because

5. You throw a ball to your friend with across the room. When the ball reaches its maximum altitude, its velocity will be A) 9.81 m/s22 B) zero. C) horizontal only D) 9.81 m/s E) horizontal & vertical

6. If you throw a ball straight up, when it reaches its highest point in its flight. The magnitude of the acceleration will ___

7. A stone is thrown horizontally from the top of a tower at the same instant that a ball is dropped vertically. Which object is traveling slower when it hits the level ground below?

8. If we have 2 bullets one is dropped from rest, at the same time that other one is fired horizontally from a rifle. If both bullets leave from the same height above the ground, which bullet will hit the ground first?

9. A player throws a football 50.0 m at 61.0° north of west. The northward component of the displacement of the football thrown is given by ___

10. If you walk 8.0 meters in a straight line and then you turn around 90° and walk another 5.0 meters in another straight line, the total displacement have approximately a magnitude of A) 8.2 m B) 13 m C) 9.4 m S) 10.5 m E) 12.6 m

11. A boy jumps at a speed of 20.0 m/s at an angle of 50.9° above the horizontal. What is the horizontal component of the boy's velocity?

12. A ball thrown horizontally from a point 24 m above the ground strikes the ground after traveling horizontally a distance of 15m. With what speed was it approximately thrown? (in this problem use g = 10 m/s)

13. A girl throws a rock horizontally, with a velocity of 10 m/s, from a bridge. It falls 45 m to the water below. How far does the rock travel horizontally before striking the water

14. A baseball is thrown an angle of 25° relative to the ground at a speed of 35m/s. If the ball was caught 42m from the thrower, how high did the ball travel before being caught?

15. If you throw a handball at an angle θ above the horizontal with a velocity V, at the highest point of its trajectory the velocity of the hand ball is A) zero B) Vcosθ C) 2v D) Vsinθ E) V√V

16. If you walk 8.0 meters in a straight line and then you turn around 90°° and walk another 5.0 meters in another straight line, the total displacement have approximately a magnitude of A) 8.2 m B) 13 m C) 9.4 m D) 10.5 m E) 12.6 m

17. A baseball is thrown an angle of 25°° relative to the ground at a speed of 35m/s. If the ball was caught 42m from the thrower, how high did the ball travel before being caught?

please answer what you can, thanks.

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