Show:
1st Six Weeks 1
1st Six Weeks 2
Forces and Newton's Laws 1
Forces and Newton's Laws 2
Forces and Newton's Laws 3
100
The slope of a displacement vs. time graph is equal to this.
What is velocity/speed.
100
A change in velocity over a period of time.
What is acceleration.
100
The tendency of an object to maintain its state of motion.
What is inertia.
100
For every force there is an ______ ___ _______ force.
What is equal and opposite.
100
A net force will cause a mass to ________ .
What is accelerate.
200
The slope of a velocity vs. time graph is equal to this.
What is acceleration.
200
Mary walks a distance of 50 meters in 32 seconds. This is her speed. (INCLUDE UNITS!!)
What is 1.56 m/s.
200
I push a crate with a mass of 54 kg and it accelerates at a rate of 10 m/s/s. With what force am I pushing?
What is 540 N.
200
A 2500 kg crate is moving to the right at a constant speed of 5.67 m/s. This is the net force acting on the crate.
What is 0 N.
200
A shoe with a mass of 5 kg is sitting on the floor. This is the magnitude AND direction of the normal force acting on the shoe.
What is 49.05 N up.
300
Jason has an initial velocity of 20 m/s, an acceleration of 4 m/s^2 and is traveling for 30 seconds. What is his final velocity at the end of the 30 second period?
What is 140 m/s.
300
Starting from rest, Elizabeth accelerates to a speed of 30 m/s in 5 seconds. What is her acceleration?
What is 6 m/s^2
300
An elephant has a mass of 1000 kg. What is the weight of the elephant?
What is 9810 N.
300
The weight of my cell phone is 2 kg. This is the mass.
What is 0.2 N.
300
The mass of my purse is 5 kg. What is my weight.
What is 49.05 N.
400
Initially a football is kicked at an angle with an x-component of velocity equal to 25 m/s and a y-component of velocity equal to 13 m/s. What is the x-component of velocity at the TOP of the trajectory, and what is the y-component of velocity at the TOP of the trajectory?
What is vx = 25 m/s, vy = 0 m/s
400
In projectile motion, the horizontal acceleration is always _____, and the vertical acceleration is always _______.
What is 0 m/s^2, -9.81 m/s^2.
400
There is a force of friction of 30 N acting on a moving car. The weight of the car is 100 N. What is the coefficient of friction?
What is 0.3
400
My car has a mass of 200 kg. As it is moving, the coefficient of friction between the car and the road is .12. What is the force of friction acting on my car?
What is 235.44 N.
400
I have a mass of 55 kg. This is the normal force that the ground exerts on me as I stand.
What is 539.55 N.
500
I roll a bowling ball with an initial velocity of 10 m/s. The ball travels a distance of 250 m, and it takes 20 seconds to do this. What is the bowling ball's acceleration?
What is 0.25 m/s^2.
500
Paul is traveling down the road with an initial velocity of 30 m/s. He is accelerating at a rate of 2 m/s^2 and travels a distance of 100 m. What is his velocity at the end of his 100 m journey? (round to the nearest whole number)
What is 36 m/s.
500
An applied force of 60 N is used to accelerate an object to the right across a frictional surface. The object encounters 15 N of friction. The weight of the object is 90 N. Draw a complete FBD and determine the net force acting on the object.
What is 45 N to the right.
500
An applied force of 60 N is used to accelerate an object to the right across a frictional surface. The object encounters 15 N of friction. The weight of the object is 90 N. Draw a complete FBD and determine the mass of the object.
What is 9.17 kg.
500
An applied force of 60 N is used to accelerate an object to the right across a frictional surface. The object encounters 15 N of friction. The weight of the object is 90 N. Draw a complete FBD and determine the acceleration of the object.
What is 4.91 m/s^2.