At what point is v_y= 0 m/s?

• A

• B

• C

• D

• None of these points

At what point is v_x= 0 m/s?

• A

• B

• C

• D

• None of these points

Which vector pair (arrow pair) correctly represents the acceleration and velocity at point P?

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1

A ball is thrown into the air at some angle, with initial velocities v_x (horizontal) and v_y (vertical). At the very top of the ball’s path:

What is its velocity in the vertical direction?

• v_y

• Greater than v_y

• Zero

A ball is thrown into the air at some angle, with initial velocities v_x (horizontal) and v_y (vertical). At the very top of the ball’s path:

What is its velocity in the horizontal direction?

• v_x

• Greater than v_x

• Zero

In the absence of air resistance, the angle at which a thrown ball will go the farthest is?

• 90°

• 30°

• 60°

• 45°

A boy throws a rock with an initial velocity of 2.15m/s at 30.0 degrees above the horizontal. How long does it take to hit the ground? hundredths

A lacrosse player slings the ball at an angle of 30 degrees above the horizontal with a speed of 20 m/s. What is the ball’s displacement in the x direction? whole number

A baseball is thrown at a 22.5° angle and an initial velocity of 65 m/s. Assume no air resistance. How far did the ball travel horizontally when it hit the ground?

• 500.76 m

• 31.63 m

• 103.7 m

• 305.05 m

A projectile is launched from a height with an initial velocity v_0,x. The v_f,x represents the final horizontal velocity before impact.

• v_0,x = v_f,x
• v_0,x < v_f,x
• v_0,x > v_f,x
• unable to determine