Forces
A 50 kg cart travels down a hill at 2 m/s^2. What is the force?
25 N
1.7 m/s
What is the final step of the scientific method?
Form a conclusion
As wavelength increases, frequency ____________
decreases
What is the conservation of energy?
Energy cannot be created or destroyed, only transfered
What is Newton's 1st Law?
Everything either stays in rest or in motion, unless acted upon by an outside force.
A runner runs a 400 m track 2 times. What is the displacement and distance?
Displacement: 0 m
Distance: 800 m
5000 mL = _________ L
5 L
As frequency increases, amplitude ____________
increases
A mover pushes a box 7 m with a force of 90 N. What is the work?
630 J
What is Newton's 3rd Law?
Every action has an equal and opposite reaction
A bee slows down from 90 m/s to 30 m/s within 5 s. What is its acceleration?
-12 m/s^2
23 km/hr = ________ m/s
6.4 m/s
Gamma rays have the shortest wavelengths, meaning that they have the _________ frequencies
highest
A powerlifter moves a dumbbell with 60 J of work over 10 s. What is the power?
6 W
A 10 kg bowling ball travels 20 m in 10 s. What is the momentum?
20 kg * m/s
What are the units for both velocity and acceleration?
Velocity: m/s
Acceleration: m/s^2
91 cm = ________ Dm
0.091 Dm
If a 8m wave has a frequency of 50 Hz, then what is the wave speed?
400 m/s
If a 50 kg rollar coaster is sitting 250 m above the ground, what is the potential energy?
122,500 J
A 450 kg truck speeds up from 30 m/s to 60 m/s within 5 s. What is the force of the truck?
6750 N
A cart accelerates at a rate of 7 m/s^2 within 7 s. If the final velocity was 50 m/s, then what was the initial velocity?
1 m/s
560 g = _______ oz
19.8 oz
If a wave has a speed of 45.9 m/s, and a wavelength of 5 m, then what is the frequency?
9.2 Hz
A 500 kg rollar coaster travels at 60 m/s. What is the kinetic energy?
1,800,000 J