UCM/NLUG

What happens to an object's speed as the radius decreases?

• It increases.
• It decreases.
• It remains unchanged.

Centripetal acceleration always points

• in the direction of the object's motion
• in the opposite direction of the object's motion
• towards the center of the circle
• towards the outside of the circle

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

Tags

NGSS.HS-PS2-1

At the top of a roller-coaster loop, gravity and the normal force point in opposite directions.

• True
• False

Tags

NGSS.HS-PS2-1

Any object with a mass is surrounded by a gravitational field in which another object experiences a force due to the interaction between its ____ and the gravitational field at its location

• force
• velocity
• acceleration
• mass

Tags

NGSS.HS-PS2-4

If you went to the moon, would your weight change?

• Yes
• No
• Maybe

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A particle P is moving in a circle with uniform speed. Which one of the following diagrams correctly shows the direction of the acceleration a and velocity v of the particle at one instant of time?

• A
• B
• C
• D

The gravitational force between two bodies is proportional to the product of their masses, and inversely proportional to the cube of the distance between them

• True
• False
• Whatever
• Possibly...

Tags

NGSS.HS-PS2-4

When the puck is in the position shown in the diagram below, what is the direction of the net force that acts on the puck?

• Toward the top of the screen
• Toward the bottom of the screen
• Toward the left edge of the screen
• Toward the right edge of the screen

Tags

NGSS.HS-PS2-1

What is the force that causes centripetal acceleration when a car goes around an unbanked curve?

• Friction
• Gravity 
• Normal
• Tension