Incline Forces: Review

Forces and Motion

Review Lesson

Multiple Select

Neglecting friction, what forces act on the cyclist?

• Weight/gravity

• Normal

• Applied

• Drag

Update your drawing!

Fill in the Blank

What is the normal force for the 60kg cyclist?

Multiple Choice

What can we find knowing that the displacement was 45 meters and the event took 7.8 seconds?

• the final velocity is 5.77 m/s

• the acceleration is 5.77 m/s/s

• the average velocity is 5.77 m/s

• the initial velocity is 5.77 m/s

Fill in the Blank

Ok so the average velocity was 5.77 m/s and the cyclist started at rest. In m/s, what is the final velocity then?

Multiple Choice

How can we find the acceleration from this information?

• it's the same, 11.5

• take the final velocity and divide it by 2

• take the final velocity and divide it by the time

Fill in the Blank

What will the net force be with the resulting 1.48 m/s/s acceleration?

Forces are BALANCED in y-direction. Find the applied force!

Fill in the Blank

What is the applied force if the net force was 88.8 Nand the drag force was 40 N?

List the forces present (neglect drag).

Multiple Select

What forces are acting on the sliding box?

• Weight/gravity

• Tension

• Normal

• Friction

• Thrust

Resolve the tension force of 240 N into x and y components.

So what's the net force?

Fill in the Blank

In Newtons (N), what is the net force from the previous slide problem?

Multiple Choice

Knowing the net force, the time applied, and the mass of the object, what can we find?

• Acceleration: F = ma

• Velocity: F = vt

• Displacement: D = vt

• none of these

Use the acceleration and the time to determine the final velocity.

Open Ended

How can we use the final velocity of 16.2 m/s to determine how far the object traveled in 3.5 seconds?