An airplane accelerates down a runway at 3.20 m/s2 for 32.8 s until it is finally lifted off the ground. Determine the distance traveled before takeoff
d = 1720 m
ΣF= 0 means...
The net force is at 0
A 2200kg car travelling at 30ms collides with another 2200kg car that is at rest. The two bumpers lock and the cars move forward together. What is their final velocity?
15 m/s
A 20kg box is dropped 13m. How much work was done on the box?
2548 J
What equation would you use to solve for voltage?
V = IR
What digits in a measurement are valid?
Significant figures
What is the equation used to find force
F= ma
A 10kg ball moving at 30ms strikes a 12kg ball at rest. After the collision the 10kg ball is moving with a velocity of 13ms. What is the velocity of the second ball after the collision?
14.2 m/s
A ball is dropped from 22m above the ground. Assuming gravity is −9.8ms2, what is its final velocity?
20.77 m/s
If there are 40 Volts and 5 Amps running through an electrical circuit, what is the resistance of the circuit?
8 Ohms
A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the car
a = 8.10 m/s/s
Which of newton's laws explain the resistance an object has from a change in motion?
Law of Inertia
A 2.2kg hammer moving with a velocity of 10ms strikes a nail, after which the hammer has a velocity of 0ms. If the hammer strikes the nail with 180N of force, how long were the two in contact?
0.12 s
A skier is at the top of a hill. At the bottom of the hill, she has a velocity of 12ms. How tall was the hill?
7.35 m
1C is equal to how many elementary charges
6.25 e18
.5050 has how many sig figs?
4
What is the acceleration due to gravity on earth?
9.81 m/s2
A 3400kg car travelling at 28.7ms rear ends another 3400kg car at rest. The two bumpers lock and the cars move forward together. What is their final velocity?
14.4 m/s
A 3.23kg book falls off the top of a 3.01m bookshelf. How much work is required to put the book back on the top of the bookshelf, assuming it is lifted with a constant velocity?
95.28 J
1.60e-19
Rocket-powered sleds are used to test the human response to acceleration. If a rocket-powered sled is accelerated to a speed of 444 m/s in 1.83 seconds, then what is the acceleration and what is the distance that the sled travels?
a = 243 m/s/s
d = 406 m
A car with a mass of 1100 kg1100 kg can accelerate on a level road from rest to 2 m/s2 m/s in 14 s14 s. What is the steepest slope this car can climb?
0.83∘
A 100kg crate slides along the floor for 3s before stopping. If it was initially moving with a velocity of 3ms, what is the force of friction?
−100N
A book falls off of a 2.2m high table. If the book weighs 0.75kg, what will its final velocity be right before it hits the ground?
6.57 m/s
If 1.35 A is flowing through R1, what is the voltage drop across R2?
R1=5Ω, R2=3Ω, R3=4Ω, R4=1Ω, R5=2Ω
2.53V