Force and Motion

Front

Which of the following is used to measure speed? meters, seconds, seconds per meter, meters per second

Back

meters per second

Front

A bird flies 50 meters in 10 seconds. What is its speed? Options: 0.2 second per meter, 0.2 meters per second, 5 seconds per meter, 5 meters per second

Back

5 meters per second

Front

A flat horizontal line on a distance-vs.-time motion graph shows

Back

no speed

Front

Carts of different masses are placed on a ramp at different heights. Which combination of features will have the greatest gravitational potential energy?

Back

high mass and high height

Front

A student wants to conduct an investigation to determine if there is a relationship between the speed a cart and the cart's kinetic energy. They should

Back

keep all variables the same except the speed of the cart.

Front

Which has the greater effect on the kinetic energy of a moving object, doubling its mass or doubling its speed?

Back

Doubling the object's speed

Front

If there is no force acting on a moving object, it will

Back

continue moving at the same speed and in the same direction.

Front

What does it take to change the direction or speed of an object?

Back

an unbalanced force

Front

A ball rolls across a smooth surface at a steady 0.5 m/s. What is its acceleration?

Back

0 m/s²

Front

What is the force needed to accelerate a 10 kg object at 2 m/s²?

Back

20 N