Physics big idea

What velocity time graph shape would match the distance time graph shown?

• A downward sloping line heading toward the x axis

• An upward sloping line heading from the x axis

• A horizontal line

• An upward sloping line heading toward the x axis

Tags

NGSS.MS-PS3-1

Which of the following has the largest starting vertical velocity?

• A projectile shot at a 10 degree angle at 60 m/s

• A level projectile shot at 50 m/s

• A projectile shot at a 60 degree angle at 30 m/s

• A projectile shot at a 30 degree angle at 40 m/s

A car slows from 20 m/s to 15 m/s with an acceleration of -3 m/s2. What distance has the car covered?

• 29.17 meters

• .55 meters

• 1.67 meters

• 11.67 meters

Tags

NGSS.HS-PS2-1

Vector A has a length of 12 and is at a 20 degree angle above horizontal. Vector has a length of 10 and is at a 50 degree angle above horizontal. What is the height of the resultant (R)?

• 22

• 11.74

• 17.70

• 15.62

A 10 kg object is shown for an object sliding to the right. Assume the applied force is 60 N and Friction is 40 N. Which statement is False?

• A distance time graph for the object would show the a straight line moving away from the x axis

• The coefficient of friction is .4

• The object is speeding up at 2m/s2

• The object is not in a state of inertia

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A helium spy balloon speeds up from 5 m/s to 15 m/s at a rate of 2 m/s2. How much time does this take?

• 2 seconds

• .29 seconds

• 10 seconds

• 5 seconds

Tags

NGSS.MS-PS2-2

A 400 kg helium spy balloon accelerates upward at 2 m/s2. Which statement is true? Assume gravity and the buoyant force are the only two forces acting on the object.

• The net force acting on the balloon is 0.

• The upward buoyant force is 600 N and the weight is 400 N

• The upward buoyant force is 4800 N and the weight is 4000 N

• The force of gravity is larger than the buoyant force

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which of the following statements is FALSE about the graph?

• The object is slowing down in the (-) from 5s to 10s, and speeding up in the (+) from 10s to 15s

• The acceleration is 0 m/s2 from 0s to 5 s and also from 15s to 20 s

• The object is at rest from 0s to 5s and from 15s to 20s

• The displacement the first 5 seconds is -40 m, and the acceleration from 5s to 15 s is 1.6 m/s2

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

In which situation(s) would the vertical velocity of a projectile be 0 m/s?

• At the very start of a level projectile.

• Throughout the whole flight of a level projectile

• At the highest point of a projectile that follows a parabolic path

• The vertical velocity is never 0 m/s since a projectile is always moving

3(cos40) + 5(cos60)

What would someone most likely be trying to find from the above calculation?

• The vertical component of the resultant

• The angle of the resultant

• The overall length of the resultant

• The horizontal component of the resultant