2D motion Study Guide

What is the representation of blue line in this illustration?

• radius

• diameter

• tangent

Which represents the acceleration of the ball?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

Which of the following represent the possible direction for speed of the moving ball in a circular motion?

• A

• B

• C

• D

What is the direction of the velocity at point B, if the ball is revolving clockwise?

• up
• right
• down
• left

The velocity is always _____ to the line of a circle. 

• outwards
• towards the center
• tangent
• faster

What's the centripetal acceleration of an object traveling 2.3 m/s around a circle of diameter 0.6 m?

• 5 m/s²

• 17.63 m/s²

• 10 m/s²

• 8.81 m/s²

Tags

NGSS.HS-PS2-1

Two balls are fired horizontally at the same time. Which ball hits the ground first?

• The one fired at 10 m/s

• The one fired at 20 m/s

• They both hit at the same time

One ball is fired upward and another ball downward. Which projectile has the greater acceleration?

• The ball fired upward

• The ball fired downward

• They have the same acceleration

Tags

NGSS.HS-PS2-1

A ball is thrown horizontally from a balcony and hits the ground after 2.5 seconds. About how high is the balcony?

• 31 m

• 25 m

• 20 m

• 12 m

A ball is launched horizontally at 30 m/s from a 50 m tall cliff. About how far will the ball travel horizontally before landing?

• 67 m

• 80 m

• 96 m

• 112 m