PROJECTILE MOTION

If you throw a baseball straight up, what is its acceleration at the highest point?

• 9.8 m/s²
• 9.8 m/s
• 0 m/s²
• 0 m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

What is the horizontal acceleration of a projectile?

• 0 m/s²

• 9.8 m/s²

• depends on initial velocity

• not known

Two objects of the same mass are launched from the ground. Object A has a launch angle of 45, while Object B has a launch angle of 65. Which object will go higher?

• A
• B
• Both objects will reach the same height

• unable to determine with the given information

What is the direction of the acceleration for any projectile?

• The direction the projectile is traveling.

• Down

• Up

• Depends on the initial velocity

A ball is thrown and follows the parabolic path shown. Air friction is negligible. Point C is at the same height as A. How does the speed of the ball at A and C compare?

• Speed at A is higher

• Speeds at A and C are equal in magnitude

• Speed at A is lower

• cannot be determined

A ball is thrown and follows the parabolic path shown. Air friction is negligible. Which of the following diagrams best shows the direction of the velocity of the ball at point C?

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A ball is thrown and follows the parabolic path shown. Air friction is negligible. Which of the following diagrams best shows the direction of the acceleration of the ball at point D?

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What is the horizontal speed of the projectile at point C?

• same as the speed in B

• same as the speed in A

• bigger than the speed in D

• depends on initial angle