Kinematics
What is the slope under a distance vs time graph?
What is speed
What is Newton’s first law of motion also known as?
What is the Law of Inertia?
What's the unit of measurement of Power?
What is Watts
What is the law of conservation of momentum?
What is:
mav0a+mbv0b= mava+mbvb
What is ω and what does it represent?
What is Omega; represents angular velocity
Name a UAM equation
What is:
v=v0+at
x=x0+v0t+1/2at2
v2=v20+2a(x)
x=x0+1/2(v)t
Which of the following is NOT a scalar?: speed, distance, mass, force
What is force
What’s the equation of Elastic Potential Energy
What is PE=1/2kx2
What is the unit of measure for momentum?
What is kg . m/s
When is the angular momentum of a system constant?
What is when no external torque acts on the system
A train travels at a speed of 30 m/s for 40 seconds. How far does it travel during this time?
What is x = 1200 meters
What is the acceleration of the 3 kg box that has 25 N of force applied to the right and 55 N left?
what is a = 10 m/s2 left
What is the potential energy of a 1000g cart initially at rest at a height of 19m?
What is PE =186.39 J
A 1503 kg car is traveling at 41 m/s. What is its momentum?
What is p = 61623 kg . m/s
Through what angle, in degrees, does a 35 rpm wheel turn in 0.29 s?
What is θ=60 degrees
What is the acceleration of a person after he jumps off a building that is 7917581m tall?
What is a = 9.81 m/s2
Two identical balls (B and C) fall from rest from different heights to the ground. Ignoring air resistance, what is the ratio of the heights from which B and C fall if ball C takes twice as long as ball B to reach the ground?
What is 1:4
A car with a mass of 1000 kg is traveling at v=20m/s. Calculate the Kinetic Energy of the car.
What is KE =200,000 J
Car A crashes into Car B. Car A’s initial velocity is 50 m/s while Car B is at rest. The two cars have a mass of 1000kg and stick together in collision. What is the total momentum of the two cars after the collision?
What is p = 50,000 kgm/s
Determine the angular velocity if 4.8 revolutions are completed in 4 seconds.
What is ω=7.5 rad/s
A cannonball is fired with an initial speed of 24.14 m/s at 34 degrees with the horizontal. Ignoring air resistance, how long does the cannonball take to reach the top of its trajectory? ( g = 10m/s2)
What is t = 1.35 seconds
A can of paint w/ a mass of 10kg hangs from a rope. If the can is to be pulled up to a rooftop with a constant velocity of 0.5 m/s, what must the tension on the rope be? (g=10m/s2)
What is Ft = 100 Newtons
A 4 kg dog is dropped from a height of 20 m. There is no air resistance. Calculate the dog’s kinetic energy before it hits the ground.
What is KE =784.8 J
A 15-kg rock is thrown with a velocity of 20 m/s to a 50-kg person at rest on frictionless ice. The person catches the rock and then slides across the ice. What is the velocity of the person and the rock after the collision?
what is v = 4.62 m/s
A uniform rod of length 50 cm and mass 0.2kg is placed 15 cm left of a fulcrum at a distance of 40cm from the left end of the rod. At what distance from the left end of the rod should a 0.6kg mass be hung to balance the rod?
What is r = 45cm