Physics Fall Semester Review | Baamboozle - Baamboozle

English 35 Public

general review

Study Slideshow

What is the formula for calculating the gravitational force on an object?

F=mg (F=m x -9.8)

What do you know about the velocity if the forces on an object are balanced?

velocity is constant

T/F: If the forces acting on an object are balanced the object MUST be at rest?

False; balanced forces mean constant velocity, the constant velocity does not have to be 0 m/s

Name the force involving strings (or things similar to strings).

Tension force

Which is greater static friction or kinetic friction?

static friction

At what time(s) did the object turn around (change direction)?

1s and 7s (whenever the line for the v-t graph crosses the x-axis the object is changing direction)

What is the displacement in the first 1s?

2.5 m (area under the v-t graph is equal to the displacement)

Which is greater 95 kg or 950 g?

95 kg because 95 kg = 95000 g and 950 g = 0.95 kg

What is 112 cm in meters?

1.12 m

The fastest speed skater in the world can accelerate from rest to 25 m/s in 15 seconds. What is the distance traveled during this time?

187.5 m

How do you calculate the weight of an object?

weight = gravitational force = mg = m x -9.8

What force typically opposes the gravitational force?

normal force (sometimes tension force)

Is the car in the FBD speeding up or slowing down? How do you know?

speeding up; Fnet =( 275+395)-560 = +110 N; Fnet is to the right and velocity is to the right --> object is speeding up

If the frictional force is greater than the applied force is the object speeding up or slowing down?

slowing down

What forces act on an object as it falls through the air?

gravitational (down) and drag/air resistance

What is Newton's 2nd Law?

F = ma