Physical quantities review

A curved groove is place on the top of a level table as shown in the diagram. A ball is pushed in the groove at P so that it leaves at Q. Which picture shows how the ball will move when it leaves the groove at Q?

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At the instant shown in the diagram, the car's centripetal acceleration is directed-

• toward E

• toward N

• toward W

• clockwise

At the position shown in the diagram, which arrow indicates the direction the instantaneous (tangential) velocity of the cart?

• A

• B

• C

• D

Bruno the bat flies at a speed of 0.5 m/s in circle of radius 1 m. What is his acceleration?

• 0.25 ms^-2
• 0.5 ms^-2
• 1 ms^-2
• 2 ms^-2

Unit for mass

• kg

• g

• m/s

• m/s^2

unit of weight

• m/s

• N

• kg

• s

Unit of Force

• J

• kg

• N

• m/s

Unit of acceleration

• s

• m/s

• m/s^2

• m

unit of distance

• km

• m

• miles

• s

unit of velocity

• s

• m

• m/s

• m/s^2