Motion
Forces
Magnetic fields
Energy, work, and power
100
A car accelerates down a highway at 3.20 m/s2 for 32.8 s until is finally gets to the first exit. Determine the distance traveled before reaching the exit.
1720 M
100
What is Newton's first law?
An object will not change its motion unless a force acts on it
100
Draw a bar magnet and show the magnetic field lines (including direction) around it.
100
A box is pushed horizontally with a force of 30N for 10 meters. What is the work done on the box?
300 J
200
An airplane starts from rest and accelerates (uniformly) over a time of 5.21 seconds ending up for a certain distance of 110 m. what is the acceleration of the airplane?
8.10 m/s^2
200
What is Newton's second and third law?
In the second law, the force on an object is equal to its mass times its acceleration. The third law states that for every action (force) in nature there is an equal and opposite reaction.
200
Draw the magnetic field lines between two like magnetic poles.
200
A person riding a bike rides into a crack in the ground and comes to a stop. 150 Newtons is the average force acting on the biker and they stop in about 10 m. That being said what is the total work done on the biker?
1500 J
300
If Meredith free falls for 2.60 seconds, what will be her final velocity and how far will she fall?
d= 33.1 M
Vf= 25.5 m/s
300
What is the force of a 1000 kg elephant that is falling (freely) at 9.8 m/s^2
F=9,800N
300
If you broke a magnet into two pieces, what would happen to the pieces?
If a magnet was to be broken, the polarity resets and the two pieces would become their own magnets consisting of a North and a South pole.
300
A car is pushed horizontally with a force of 40 N, but a force of 20 N works against it while it is being pushed. If it was pushed about 50 M, what is the work that was done?
1000 J
400
Trae Young can jump to a height of 2.62 m. Determine his takeoff speed?
Vi= 7.17 m/s
400
A football with a force of 15 N accelerates at 3 m/sec2. a second football thrown with the same force accelerates 4 m/sec2. What are the masses of the two footballs?
m=5kg and 3.75kg
400
What would happen if one was to drop or heat up a magnet and why?
What would end up happening is that it would become weak and the reason for that is that the alignment of the magnetic fields becomes weak.
400
What power does the car need to be capable of doing if it needs to 4000 J every 2.7 seconds? (round the whole number please)
1481 W
500
Neema is building and designing the runway for an airport. Out of all the total planes, the lowest acceleration rate is 3 m/s2. The takeoff speed for that same plane will be 65 m/s. What is the minimum allowed length for the runway?
D= 704 M
500
An object with a mass of 30 kg is falling in the air and experiences a force due to the air resistance of 50 newtons. What is the net force that is acting on the object?
244 N
500
How can someone find the direction of the current of a magnet?
Right hand rule
500
A boat with a output of 160,000 w puts out a force of 13,000 N. What is the speed that it is traveling at? (round to the nearest tenth)
12.3 m/s