Physics Quiz

What is the velocity of a car that moves 310 m in 33 s?

• 0.11 m/s

• 9.4 m/s

• 99 km/h

• 310 m

A car starts at a position of 3 km and moves to a final position of 5 km. What is the displacement of the car?

• -8 km

• 2 km

• 0 km

• -2 km

A plane starting from rest is accelerated to its takeoff velocity of 75 m/s during a 5 second period. What is the acceleration of the plane?

• 375 m/s²

• 25 m/s²

• 15 m/s²

• 0.07 m/s²

A jetliner is landing with a speed of 69 m/s. Once the jet touches down, it has 750 m of runway in which to reduce its speed to 6.1 m/s. Compute the average acceleration of the plane during landing.

• -3.1 m/s²

• 3.1 m/s²

• -6.2 m/s²

• 6.2 m/s²

The displacement x of an object moving along the x-axis is shown above as a function of time t (position vs. time). The acceleration of this object must be (no work required)

• zero

• constant but not zero

• increasing

• decreasing

Given a force of 100 N and an acceleration of 10 m/s², what is the mass?

• 10 kg

• 100 kg

• 0.1 kg

• Zero

A hockey puck with a mass of 0.2 kilogram is sliding along ice that can be considered frictionless with a velocity of 10 meters per second. The puck then crosses over onto a rough floor that has a coefficient of kinetic friction equal to 0.2. How far will the puck travel before friction stops it?

• 17.6 m

• 42.7 m

• 25.5 m

• 59.6 m

What is the magnitude of the tension in the connecting string?

• 16.5 N

• 18.7 N

• 26.1 N

• 34.6 N

What is the magnitude of the horizontal acceleration of the cart?

• 0.5 m/s²

• 1.6 m/s²

• 2.0 m/s²

• 2.5 m/s²

If a boat sails north, in what direction will the friction force be?

• north

• west

• south

• east