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100
How you calculate speed from a distance vs. time graph.
You find the slope of the line.
100
***QUADRUPLE BONUS POINTS***A straight line on a distance vs. time graph indicates this.
What is constant speed.
100
I travel 500 m in 10 seconds. This is my speed.
What is 50 m/s.
100
An object in motion stays in motion, an object at rest stays at rest, unless acted upon by an unbalanced force.
What is Newton's First Law (Inertia).
100
A net force will cause a mass to accelerate.
What is Newton's Second Law.
200
The vertical component of velocity at the top of the trajectory.
What is 0 m/s
200
This causes an object to speed up, slow down, or change direction.
What is a force.
200
Xavier applies a rightward force of 300 N to a moving box. Friction resists the motion with a force of 150 N. The mass of the box is 10 kg. Draw a COMPLETE FBD of this interaction.
What is (see whiteboards)
200
Is the vertical component of velocity of an object in projectile motion greater towards the top or the bottom of the trajectory?
What is towards the bottom.
200
***TRIPLE BONUS POINTS***A change in velocity over time.
What is acceleration.
300
Starting from rest, Florentino accelerates to a velocity of 12 m/s in 5.5 seconds. How fast is Florentino accelerating? (ROUND TO THE NEAREST HUNDREDTH....USE APPROPRIATE UNITS)
What is 2.18 m/s^2
300
What is the mass of an object that requires a force of 30 N to accelerate at a rate of 5 m/sec2?
What is 6 kg
300
***TRIPLE BONUS POINTS***Two stars exist some distance away from each other. Over the course of 2000 years, the stars drift so that they are three times as far from each other as before. How does the affect the gravitational force between them?
What is it is 1/9 as large.
300
What is the force on a 1,000 kilogram-elevator that is falling freely under the acceleration of gravity only?
What is 9810 N
300
Two stars exist some distance away from each other. Over the course of 1000 years, one star becomes 1/2 as large as it originally does. How does this affect the gravitational force between the two stars?
What is it becomes 1/2 as great.
400
Calculate the force between two objects that have masses of 70 kilograms and 2,000 kilograms separated by a distance of 1 meter. (G=6.67x10^-11)
What is 9.34 × 10–6 N.
400
The mass of the sun is 1.99 × 10^30 kilograms and its distance from Earth is 150 million kilometers (150 × 10^9 meters). What is the gravitational force between the sun and Earth? Earth’s mass is m = 5.9742 × 1024 kilograms. G=6.67x10^-11
What is 3.52×10 N
400
Diavian and Elijah are pushing on opposite sides of a box. Davian is pushing the box to the right with a force of 600 N, and Elijah is pushing the box to the left with a force of 450 N. The mass of the box is 20 kg. What DIRECTION will the box move, what is the NET FORCE, and what is the ACCELERATION of the box??
What is (RIGHT), (Net Force = 150 N Right), (acceleration = 7.5 m/s^2)
400
***DOUBLE POINTS***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
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
500
***QUADRUPLE POINTS***The distance between Earth and its moon is 3.84 × 10^8 meters. Earth’s mass is m = 5.9742 × 10^24 kilograms and the mass of the moon is 7.36 × 10^22 kilograms. What is the force between Earth and the moon? (G= 6.67x10^-11)
What is 1.99 ×10^20 N
500
***TRIPLE BONUS POINTS***The Work-Energy Theorem states that work is equal to the change in KE. Toni wants to increase the KE of her desk by pushing it a distance of 10 m with a force of 25 N. If the mass of the desk is 20 kg, and it starts from rest, what is the final velocity of the desk?
What is 5 m/s.
500
Two stars exist some distance away from each other. After 2000 years, the stars are now twice as far from each other than they were before. By what factor did this impact the gravitational force between them?
What is by a factor of 1/4
500
The Work-Energy Theorem states that work is equal to the change in KE. Yessenia picks up her backpack (mass of 6 kg) and increases its velocity from 2 m/s to 6 m/s. What is the amount of work that Yessenia does on her backpack?
What is 96 Joules (J)
500
The Work-Energy Theorem states that work is equal to the change in KE. Angel and Renita collectively apply 50 N of force to move a bookcase 10 meters. If the bookcase initially starts at rest, what is the final Kinetic Energy of the bookcase?
What is 500 Joules (J)