3 Laws of Motion
FBDs
Forces & Weight
Friction
Fig Newtons
100
Complete the sentence: An object at rest will remain at rest until _________.
...it is acted upon by an outside force.
(Newton's First Law)
100
What is the value of the applied force (to 2 sig figs)?
7.5 N
100
Which of the following are legitimate force units?
pound; slug;
[(kg * m)/sec]; [(slug*mi)/(hr^2)]
pound;
(slug*mi)/(hr^2)
100
A student is measuring friction coefficients but forgets to write down which is the static coefficient and which is the kinetic coefficient. If the values are 0.23 and 0.54, which is which?
Static = 0.54; Kinetic = 0.23
(Max static > Max kinetic)
100
The type of fruit used in the Fig Newton filling
Figs
200
What is the equation for Newton's Second Law?
SigmaF=ma
200
What is the value of the normal force (to two sig figs)?
2.0 xx10^4 N
200
A father is teaching his young daughter to ice skate by pulling her across the ice with a short rope. If the daughter (whose mass is 25 kg) starts to accelerate at 0.35 m/s/s, with what force is the father pulling her? (Assume that the ice is frictionless.)
8.8 N
200
While driving down a country road, a man has to stop becuase a 314-pound rock has fallen off of a hill and has landed in the middle of the road. What is the magnitude of the frictional force the man must overcome to get the rock to move?
mus=0.45; muk=0.32
140 pounds
200
The town & state where Fig Newtons got their name
What is Newton, Massachusetts
300
Suppose a man is riding a horse at a quick gallop when suddenly, the horse stops dead in its tracks. The rider flies out of the saddle and lands on the ground. Does the rider fly forward (over the horse's head) or backward (over the horse's rump)? Support your answer with one of Newton's Laws of Motion.
Forward; Newton's First Law (Law of Inertia) says an object in motion will stay in motion until acted upon by an outside force. Therefore, the rider will stay in motion in a forward direction even after the horse has stopped.
300
What is the value of the mass (to 3 sig figs)?
61.2 kg
300
A rock has a mass of 523 grams. What is its weight in Newtons?
5.1 N
300
A 745-kg box is sliding across a floor. What is the frictional force between the box and the floor?
(mus =0.45, muk=0.32)
2300 N
300
The date of National Fig Newton Day
January 16th
400
When a tire rolls on a road, it pushes against the road. According to Newton's Third Law, what must happen in response to this push?
The road pushes on the tire with equal force in the opposite direction
400
What is the value of the acceleration (to 3 sig figs)?
1.61 m/s/s
400
A 501-pound rock has fallen onto a frozen pond that you want to use as an ice-skating rink. If you push the rock with a force of 16 pounds, how fast will the rock accelerate? (Assume there is no friction between the rock and the ice.)
1.0 ft/s/s
400
A young boy found a large box that he can use to make a fort. He put some other "treasures" he found into the box, so that its weight is 11 pounds. He tied it to the back of his bike and is pulling it down the road. With what force must he pull the box in order to keep it moving at a constant velocity?
mus=0.45; muk=0.32
3.5 pounds
400
The year that Fig Newtons were invented
What is 1891
500
An object is accelerating at a rate of 8 m/s/s when it suddenly has the net force exerted upon increased by a factor of 2. The new acceleration will be _________ m/s/s.
16 m/s/s
500
What is the value of the force due to friction (to 2 sig figs)?
1.0 xx 10^4 N
500
If a box of cargo bound for space exploration weighs 1,234 pounds on earth, what will its weight be on the moon? (The acceleration due to gravity on the moon is 5.3 ft/s/s.)
210 pounds
500
A construction worker is sliding a 74-kg box of bricks across a wooden board. If the man pushes with a force of 92 N, how fast will the box accelerate, assuming the box is already moving?
mus=0.26; muk=0.12
0.05 m/s/s
500
The person who invented the machine which makes Fig Newtons
Who is James Henry Mitchell