June 2022 Physics Regents Questions 1-10 Question Preview (ID: 59779)

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Which terms identify two scalar quantities?

a) force and acceleration

b) impulse and distance

c) mass and velocity

d) energy and time

A motorcyclist, initially traveling east at 15 meters per second, accelerates uniformly at a rate of 3.0 meters per second squared east to a velocity of 21 meters per second east. How far does the motorcyclist travel while accelerating?

a) 1.0 m

b) 2.0 m

c) 36 m

d) 72 m

A battery-powered electric motor is used to cause the wheels of a toy car to rotate. In this motor, there is a conversion of

a) mechanical energy to electric energy

b) electric energy to chemical energy

c) thermal energy to electric energy

d) electric energy to mechanical energy

A projectile is launched horizontally from a height of 65 meters with an initial horizontal speed of 35 meters per second. What is the projectile’s horizontal speed after it has fallen 25 meters? Neglect friction.

a) 22 m/s

b) 35 m/s

c) 41 m/s

d) 280 m/s

Which statement describes the motion of the block?

a) The block is accelerating to the right.

b) The block is accelerating to the left

c) The block is moving to the right with constant speed.

d) The block is moving to the left with decreasing speed.

The magnitude of an unbalanced force applied to a 4.0-kilogram crate is 10. newtons. If the magnitude of this applied unbalanced force is doubled, the inertia of the crate is

a) halved

b) unchanged

c) doubled

d) quadrupled

A 60.-kilogram man is pushing a 30.-kilogram lawn mower. Compared to the magnitude of the force exerted on the lawn mower by the man, the magnitude of the force exerted on the man by the lawn mower is

a) one-quarter as great

b) one-half as great

c) the same

d) twice as great

When the car is in the position shown, what are the directions of the centripetal force acting on the car and the velocity of the car?

a) The centripetal force is directed to the right and the velocity is directed downward.

b) The centripetal force is directed downward and the velocity is directed to the right.

c) The centripetal force and velocity are both directed to the right.

d) The centripetal force and velocity are both directed downward.

An electric motor with a power rating of 6.48 x 10^4 watts is used to raise an elevator weighing 2.80 x 10^4 newtons at constant speed. What is the total time required for the motor to raise the elevator a vertical distance of 20.0 meters?

a) 0.116 s

b) 2.31 s

c) 8.64 s

d) 46.3 s

Compared to the frequency of the sound emitted by the siren, the frequency of the sound observed by the person during this event is

a) higher, only

b) lower, only

c) first higher and then lower

d) first lower and then higher

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