## PHYS 101 Quiz Newton’s Laws

**PHYS 101 Quiz: Newton’s Laws**

Covers the Learn material from Module 2: Week 2.

- A body on the surface of the Earth weighs 400 lb. The radius of the Earth is about 4,000 miles. If this same body were placed on a 4,000- mile-high tower, its weight would be
- The acceleration of a body is
- Starting from rest, a 2-kg body acquires a speed of 8 m/s in 2 seconds. The net force acting on the body is
- As a body falls through air starting from rest, its velocity
- Tides are influenced by
- You roll a ball off a table and at the same time drop a second ball straight down from the edge of table. The second ball reaches the ground ____________ the first ball reaches the ground.
- For this situation, I push on a heavy chair. Suppose I push lightly on the chair, and the chair doesn’t move at all. Then the strength of the force the chair exerts on me is
- The vertical speed of a projectile
- For this situation, I push on a heavy chair. Suppose I push very hard on the chair, and this time the chair moves and I slip backward as well. Then the strength of the force the chair exerts on me is
- The force needed to make an object move in a circle is
- Which is larger, a newton or a pound?
- If a body were in orbit very near the surface of the Earth, its centripetal acceleration would be
- Planetary orbits are
- A car moving at a constant speed goes around a curve of 400-ft radius and then goes around a second curve of 200-ft radius. The centripetal force acting on the car as it goes around the 200-ft radius curve is ___________ the value of the centripetal force acting on the car as it goes around the 400-ft radius curve.
- The SI units of acceleration are
- A satellite orbiting the Earth in a circular orbit at 400 miles from the center of Earth is moved to a distance of 1,200 miles from the center of Earth. The gravitational force between the Earth and satellite changes by a factor of 3.
- At the peak of its motion, the acceleration of a projectile is zero.
- “Net force” means the vector sum of all the individual forces acting on a particular body.
- You push on a wall, and the wall pushes back on you with the same force. This is an example of Newton’s third law.
- A body is oscillating up and down at the end of a spring. Let’s consider when the body is at the top of its up-and-down motion. The velocity points down.
- A body is oscillating up and down at the end of a spring. Let’s consider when the body is at the top of its up-and-down motion. The net force on the body has its largest magnitude.
- When a body moves in a straight line with increasing speed, the net force on it must be increasing.
- To hold a 5 lb bag of sugar in your hand, you must push upwards on it with a force of 5 lb. This is an example of Newton’s third law.
- An aircraft weighing 1,500 N is accelerated at 15 m/s 2, the force acting on the aircraft is approximately 2,296 N.
- If a body were in orbit very near the surface of the Earth, its centripetal acceleration would be equal to
*g*. - Select the closest matching pairs possible. 3 pts for each response.
**Newton’s First Law Newton’s 2**^{nd}Law ;Law Newton’s 3rd Law; Newton’s Law of Universal Gravitation; Hooke’s Law - From 2 King 6:1-6, one of the disciples of Elisha was cutting a tree and the ax head fell into the water. While we do not know how high the ax head was when it fell into the water, we will work through a physics example of the ax head’s vertical motion as if it were dropped into the water.

Other sets

- An aircraft weighs 1,500 N, its mass is
- Two cars crash head on. At any given time during the crash, the magnitudes of the collision forces exerted on each car are exactly equal. This is an example of Newton’s
- You throw a ball straight up, it peaks out, and then comes back down to you. During this motion, the velocity and acceleration
- You roll a ball off a table and at the same time drop a second ball straight down from the edge of table. The second ball reaches the ground ____________ the first ball reaches the ground.
- Where is the Sun located relative to a planet’s orbit about it?
- As a space shuttle is launched into orbit, the direction of its acceleration
- An astronaut in a space suit has a total mass of 143.5 kg and is standing on a scale that reads in newtons inside an elevator. If the elevator accelerates upward at the rate of 1.8 m/s2, what does the scale read?
- Which statement is incorrect? The gravitational force on an orbiting satellite due to the Earth
- The SI units of acceleration are
- How was the value of G first determined?
- A body is oscillating up and down at the end of a spring. Let’s consider when the body is at the top of its up-and-down motion.
- At the highest point on the path of a projectile, its vertical acceleration
- A188-pound astronaut in a training exercise experiences an acceleration of 7.2g’s. What is the net force (in newtons) acting on the astronaut?
- As a body falls through air starting from rest, its velocity
- The SI units of velocity are
- A newton is larger than a pound.
- You push on a wall, and the wall pushes back on you with the same force. This is an example of Newton’s third law.
- The direction of a field line at a point in space shows the direction of the force that would act on a body placed at the point.
- When a car goes around a curve of smaller and smaller radius, the centripetal force on it decreases.
- A body is oscillating up and down at the end of a spring. Let’s consider when the body is at the top of its up-and-down motion.
- An aircraft weighing 1,500 N has a mass of approximately 150 kg.
- A body is oscillating up and down at the end of a spring. Let’s consider when the body is at the top of its up-and-down motion.
- When a body moves in a straight line with increasing speed, the net force on it must be increasing.
- If a body were in orbit very near the surface of the Earth, its centripetal acceleration would be equal to g.
- You throw a ball straight up, it peaks out and then comes back down to you. During this motion, the velocity and acceleration always point in the same direction.
- Select the closest matching pairs possible. 3 pts for each response.
- From 2 King 6:1-6, one of the disciples of Elisha was cutting a tree and the ax head fell into the water. While we do not know how high the ax head was when it fell into the water, we will work through a physics example of the ax head’s vertical motion as if it were dropped into the water.