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- 1. Multiple Choice
SP2.d
Bruno the bat flies at a speed of 0.5 m/s in a circle of radius 1 m. What is his acceleration?
0.25 m/s²
0.5 m/s²
1 m/s²
2 m/s²
- 2. Multiple Choice
SP2.d
Calculate the amount of centripetal force it takes for a softball pitcher to rotate a ball with a velocity of 3 m/s if the ball weighs 0.12 kg and her arm is 0.65 meters long.
9.8 N
13.8 N
1.36 N
1.66 N - 3. Multiple Choice
SP2.d
A car with mass m travels around a curve with velocity v. What do you know about the centripetal force if the radius triples?
9.8?Force triplesForce divides by 3Force divides by 9 - 4. Match
SP2.d
Match the centripetal force to the situation.
friction
Horse runs around a curve
tension
Our solar system orbits around the black hole at the center of the galaxy.
lift
A bird turns while in flight.
gravitational force
- 5. Multiple Choice
If an object is spinning around on a string and the string was suddenly cut, the object would move in a
curved path
straight line
- 6. Multiple Choice
During its trip a car of mass 1500kg is traveling around a corner as shown in the picture. The car rounds a corner of radius 100m at a speed of 15m/s. Find the centripetal force acting on the car.
300N
15000N
3375N
15N
- 7. Multiple Choice
During its trip a car of mass 1500kg is traveling around a corner as shown in the picture. What actual force is equivalent to the centripetal force in this situation?
tension
friction
normal force
weight
- 8. Multiple Choice
Why do objects experience centripetal acceleration even though they can have a constant speed?
Because they are speeding up as they move in a circle
Because they are constantly changing direction and hence, velocity changes, and that net change is directed inward.
Because they are constantly changing both speed and direction
Because when you have 100 people pedaling, you can speed up more easily.
- 9. Multiple ChoiceWhich statement is true about an object that is traveling in uniform circular motion?The speed of the object varies.The net force on the object is directed toward the center of the circular path.The direction of the object's velocity is constant.The net force on the object is directed away from the center of the circular path.
- 10. Multiple ChoiceThe velocity is always _____ to the line of a circle.outwardstowards the centertangentfaster
- 11. Multiple Choice
Which vector shows the tangential velocity of the ball?
ABCD - 12. Multiple Choice
Which vector represents the centripetal acceleration of the ball?
ABCD - Answer choicesTagsAnswer choicesTags