Physics Practice (Interactive)

A car accelerates uniformly from rest at 2 m/s^2 for 10 seconds. What is its final velocity?

A 5 kg object moving at 3 m/s collides with a stationary 5 kg object and they move off together. What is their common velocity after the collision, assuming momentum is conserved?

A crane lifts a 200 kg mass through a vertical height of 15 m in 10 seconds. What is the power output of the crane? (Take g = 9.8 m/s^2.)

A wave has a frequency of 250 Hz and a wavelength of 1.2 m. What is its speed?

Light travelling in air (refractive index 1.0) enters glass (refractive index 1.5) at an angle of incidence of 30 degrees. What is the angle of refraction in the glass?

A circuit has a 12 V battery connected to two 6 ohm resistors in parallel. What is the total current drawn from the battery?

According to Kirchhoff\'s first law (current law), which statement correctly describes the relationship between currents at a junction in an electrical circuit?

How much energy is required to raise the temperature of 2 kg of water from 20 degrees Celsius to 80 degrees Celsius? (Specific heat capacity of water = 4,200 J/(kg degrees C).)

In the photoelectric effect, what happens when photons of light with energy less than the work function of the metal surface strike the surface?