Physics Acceleration

How could an object traveling at 3.8 m/s/s and then -3.8 m/s/s be interpreted?

• An object is moving forwards and then backwards.

• An object is moving backwards and then forwards.

• An objects velocity increases and then decreases.

• An objects velocity decreases and then increases.

• None are correct.

What do the following symbols represent: Vi and Vf?

• beginning velocity and ending velocity

• velocity in two different directions

• the velocity of two different objects

Tags

NGSS.MS-PS3-1

How could an object traveling at 4.2 m/s and then -4.2 m/s be interpreted?

• An object is moving forwards and then backwards.

• An object is moving backwards and then forwards.

• An objects velocity increases and then decreases.

• An objects velocity decreases and then increases.

• None are correct.

Unbalanced forces ALWAYS result in which of the following?

• acceleration

• constant velocity

• constant speed & direction

• inertia

Tags

NGSS.MS-PS2-2

Which of the following would naturally result in acceleration? *multiple answers*

• going uphill or downhill

• a flat stretch of unchanging road

• a change in surface friction

• a turn

Tags

NGSS.MS-PS2-2

• 1 & 3

• 2 & 3

• 2 & 4

• 3 & 4

Tags

NGSS.MS-PS2-2

• The speed of the cart decreases as the cart rolls down the ramp because of friction between the cart and ramp.

• The speed of the cart increases as the cart rolls down the ramp because the force acting on the cart is greater than the force of gravity.

• The speed of the cart increases as the cart rolls down the ramp because the forces acting on the cart are unbalanced.

• The speed of the cart decreases as the cart rolls down the ramp because the forces acting on the cart are balanced.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What acceleration results from 63N of force being applied to a 9kg ball?

• 567 m/s²

• 7 m/s²

• 72m/s²

• 54 m/s²

Tags

NGSS.MS-PS2-2

• 13N

• 7N

• 8N

• 12N

Tags

NGSS.MS-PS2-2

Describe this object's motion.

*multiple answers*

• constant speed

• constant acceleration

• increasing acceleration

• increasing speed

Tags

NGSS.MS-PS3-1