Physics Multiple choice questions

If an object falls with constant acceleration, the velocity of the object must A) continuously change by the same amount each second B) continuously decrease C) be constant also D) continuously change by varying amounts depending on its speed

A

What is the acceleration of a car that maintains a constant velocity of 100km/hr for 10s? A) 0 B) 10km/hr s C) 10m/hr s D) 1000 km/hr s

A

Which of the following is not a vector quantity? A) speed B) acceleration C) velocity D) none are vector quantities E) all are vector quantities

A

A car accelerates at 2 meters/s/s. Assuming the car starts from rest, how much time does it need to accelerate to a speed of 30 m/s? A)2 seconds B) 15 seconds C) 30 seconds D) 60 seconds

B

Whirl a rock at the end of a string and it follows a circular path. If the string breaks, the tendency of the rock is to A) continue to follow a circular path B) follow a strait line path

B

It takes about 6 seconds for a stone to fall to the bottom of a mine shaft. How deep is the shaft? A) about 60 m B) about 120m C) about 180 m D) more than 200 m

C

A hockey puck is set in motion across a frozen pond. If ice friction and air resistance are neglected, the force of the puck required to keep the puck moving at constant velocity is A) the mass of the puck multiplied by 9.8 m/s/s B) zero Newtons C) equal to the weight of the puck D) the weight of the puck divided by the mass of the puck

B

A truck is moving at constant velocity. Inside the storage compartment, a rock is dropped from the midpoint of the ceiling and strikes the floor below. The rock hits the floor A) ahead of the midpoint of the ceiling B) exactly below the midpoint of the ceiling C) behind the midpoint of the ceiling D) more information is needed to solve this problem

B

Ten seconds after starting from rest, an object falling freely downward will have a speed about A) 10 m/s B) 50 m/s C) 100m/s D) more than 100m/s

C

A car accelerates from rest at 2m/s/s. What is it's speed after the car starts moving? A) 2m/s B) 3m/s C) 4m/s D) 6m/s

D

A package falls off a trick that is moving at 30 m/s. Neglecting air resistance, the horizontal speed of the package just before it hits the ground is A) zero B) less than 30 m/s but larger than zero C) more than 30 m/s D) about 30 m/s

D