Newton's Laws
A book is resting on a table. According to Newton's First Law, why does the book remain stationary.
The normal force of the table balances out the force of gravity.
Two identical objects are dropped from the same height, but one is thrown horizontally, and the other is dropped straight down. Ignoring air resistance, which object hits the ground first?
They both hit the ground at the same time.
In centripetal motion, what is the direction of the centripetal force acting on an object, such as a car moving in a circular path or a rollercoaster traveling in a loop?
The direction is directed towards the middle of the circle
How long does it Spongebob to get to the Krusty Krab if he is traveling an average velocity of 2.5 m/s and he lives 750 meters away.
300 seconds or 5 minutes
What is the largest organ in the body weighing 8 pounds?
The skin
Two objects of different masses are pushed with the same amount of force. According to Newton's Second Law, how will the accelerations of the two objects compare?
The lighter object will accelerate quicker than the heavier object.
What is the acceleration of gravity in the x-direction?
0 m/s2
Consider a rollercoaster traveling in a loop. What is the direction of the tangential velocity of the rollercoaster at the highest point in the loop?
Forward
What is the acceleration of a ball that starts at 35 m/s and slows down to a speed of 20 m/s in 1.5 seconds?
-10 m/s2
What is the largest country in the world by land size?
Russia
A 10 kg object is pushed with a force of 50 N. What is the acceleration of the object?
5 m/s^2
A rock is thrown horizontally from a cliff that is 100 meters high with a velocity of 15 m/s. How long does it take for the rock to hit the ground?
4.5 seconds
A ball is being spun in a horizontal circle with a centripetal acceleration of 25 m/s² and a radius of 4 meters. What is the tangential velocity of the ball?
10 m/s
If a truck decelerates at a rate of -10 m/s2, how far is the stopping distance if it is initially travelling 70 m/s?
490 meters
What is the only food that can never go bad?
Honey
A person pushes a wall with a force of 100 N. According to Newton's Third Law, what is the magnitude and direction of the force that the wall exerts on the person?
100 N of force is directed from the wall to the person.
A rock is thrown horizontally from a cliff that is 100 meters high with a velocity of 15 m/s. How far from the cliff does the rock hit the ground?
67.8 meters
During a NASCAR race, a car with a mass of 1,500 kg is traveling around a curved track with a velocity of 50 m/s. The radius of the turn is 200 meters. What is the centripetal force acting on the car as it makes the turn? F = mv^2/r
18,750 N
A car starts from rest and accelerates at 3 m/s2 for 5.5 seconds. How far does the car travel in this time?
45 meters
Who is the "Father of Relativity?"
Albert Einstein
A car accelerates at a rate of 4 m/s² when a force of 2,000 N is applied. What is the mass of the car?
500 kg
A projectile is launched with an initial vertical velocity of 25 m/s. What is the maximum height the projectile reaches?
2.6 meters
A wheel with a radius of 0.75 meters makes one complete rotation in 5 seconds. What is the tangential speed of a point on the edge of the wheel?
0.94 m/s
A rock is thrown upward with an initial velocity of 20 m/s from the top of a cliff. It experiences a downward acceleration of 9.8 m/s2 How long does it take for the rock to reach a displacement of 0 m (back to its starting height)?
4 seconds
Before starting her solo career, Beyonce was part of what R&B group?
Destiny's Child