Kinematics Equations (vf=vi+at and ∆x=vit+1/2at^2)

The unit for speed is:

• m

• m/s

• m/s²

• s

Tags

NGSS.HS-PS4-1

What information do you know when the object starts from rest?

• t = 0s

• v_i = 0 m/s

• v_f = 0 m/s

• a = 0 m/s²

What information do you know when the object comes to a stop or turns around?

• t = 0s

• v_i = 0 m/s

• v_f = 0 m/s

• a = 0 m/s²

Which of the following is a unit for acceleration?

• km/s
• m/s²
• mi/hr
• ft

Tags

CCSS.7.RP.A.2B

Acceleration only takes place when things speed up. 

• True
• False

Tags

NGSS.HS-PS2-1

What information do you know when the object is moving at constant velocity?

• t = 0s

• v_i = 0 m/s

• v_f = 0 m/s

• a = 0 m/s²

A problem that asks "how long did it take" is prompting you for an answer measured in

• distance in meters.

• velocity in meters / second.

• acceleration in meters / second^2.

• time in seconds.

A problem that asks "how far did the object move?" is prompting you for an answer measured in

• distance in meters.

• velocity in meters / second.

• acceleration in meters / second^2.

• time in seconds.

Which of the following equations would you choose to calculate final velocity of an object traveling at a constant acceleration AND the known variables for time and velocity?

• v_f² = v_i² + 2a∆x

• ∆x = v_it + 1/2at²

• v_f = v_i + at

• ∆x = 1/2(v_f + v_i)t

Which of the following equations would you choose to calculate the time of an object travels when it starts from rest and you are given the acceleration and final velocity?

• v_f² = v_i² + 2a∆x

• ∆x = v_it + 1/2at²

• v_f = v_i + at

• ∆x = 1/2(v_f + v_i)t