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- 1. Multiple Choice
If you throw a baseball straight up, what is its acceleration at the highest point?9.8 m/s29.8 m/s0 m/s20 m/s - 2. Multiple ChoiceWhat is the horizontal acceleration of a projectile?0 m/s29.8 m/s2
- 3. Multiple ChoiceThe shape of the path a projectile follows...circularlinearwavyparabolic
- 4. Multiple ChoiceTwo objects of the same mass are launched from the ground. Object A has a launch angle of 45, while Object B has a launch angle of 65. Which object will hit the ground first?ABBoth objects hit the ground at the same timeunable to determine with the given information
- 5. Multiple Choice
A projectile is fired with initial velocity vo at an angle θ0 with the horizontal and follows the trajectory shown above. Which of the following pairs of graphs best represents the vertical components of the velocity and acceleration, v and a, respectively, of the projectile as functions of time t?
- 6. Multiple Choice
A ball is thrown and follows the parabolic path shown above. Air friction is negligible. Point Q is the highest point on the path. Points P and R are the same height above the ground. How do the speeds of the ball at the three points compare?
vP < vQ < vR
vR < vQ < vP
vQ < vR < vP
vQ < vR = vP
vP = vQ < vR
- 7. Multiple ChoiceTwo balls of the same mass begin at a height of 2m. One is released from rest while the other begins with a horizontal velocity of 5m/s. Which object its the ground first?Ball ABall BBoth balls his the ground at the same timeunable to determine with information given
- 8. Multiple Choice
A boy throws a ball at an angle of 30º at a speed of 20 m/s. What is vertical component of velocity and what is the horizontal component of velocity?
15 m/s , 12.5 m/s
20 m/s, 15 m/s
10 m/s , 17.32 m/s
12.5 m/s, 12.5 m/s
- 9. Multiple Choice
A boy throws a ball at an angle of 30º at a speed of 20 m/s. After how much time the vertical velocity will be zero and what is the total time of flight?
2.04, 1.02
1.02, 2.04
1.02, 1.02
2.04, 2.04
- 10. Multiple Choice
A boy throws a ball at an angle of 30º at a speed of 20 m/s. What is the range?
Hint: Tf×Vx
23.33 m
30 m
35.33 m
44.44 m
- 11. Multiple Choice
Centripetal force, created by swinging something in a circle, acts in a direction--
along the path of motion
away from the center of the circle
toward the center of the circle
tangent to the circle
- 12. Multiple ChoiceCalculate the velocity of an object moved around a circle with a radius of 1.65 m and an acceleration of 3.5 m/s2.2.4 m/s3.6 m/s3.9 m/s4.2 m/s
- 13. Multiple ChoiceCalculate the centripetal force required to make a 5 kg ball move 4 m/s in a circle with a radius of 2 m.10 N20 N30 N40 N
- 14. Multiple ChoiceWhat is the direction of the velocity at point B, if the ball is revolving clockwise?uprightdownleft
- 15. Multiple ChoiceYou swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?FrictionCentripetal ForceGravityInertia
- Answer choicesTagsAnswer choicesTags