Whatson G Forces Test .:. Mock test .:. Go Up

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NSL - Newton's Second Law worksheet

NF - Net Force worksheet

F - Friction worksheet

Page 1- Person pushing on stage set with and without friction.

- What is the acceleration of the set - NSL #1
- Final velocity (using linear kinematics formulas) - NSL #5
- Conceptual question (answer using words) - how could you increase the acceleration? (Notes from lectures? - 01-01NewtonLaws.ppt)
- Acceleration with two forces acting on the set - NF #9
- Force to accelerate from rest to a velocity over a particular distance - NF #7

Page 2- Crane lifting a load vertically

- Tension when the load is not accelerating - NSL #8
- Tension when the load is accelerating at down or up NF #10
- Acceleration when the tension is a particular number - NF #4
- Calculate the Tension when accelerating down or up - NF #10
- Define in words: weight and mass, give units, and tell the difference between them - (look at PowerPoint lecture: 02-01MassVsWeight.ppt)

Page 3- Red Elk's dogs sliding a sled. Friction: 4a, 7, 8

- What is the weight of the sled? - NSL #8
- What is the force to start the sled moving? - F #4a also look at PowerPoint lecture: 05-01Friction.ppt
- What force to keep the sled moving? - F #4a also look at PowerPoint lecture: 05-01Friction.ppt
- Acceleration a particular applied force - F #7
- Force to cause a particular acceleration - F #9

Page 4- Rocket taking off from earth.

- Calculate from distance and time the acceleration - NF #8 - acceleration like that
- Draw a free body diagram of the upward accelerating rocket, calculate the weight - Like lecture 03-01NetForce.ppt slide 12, and NSL #8
- Calculate the thrust of the engine - NF #8
- Find the acceleration if the thrust is a particular number - NF #4
- Conceptual question regarding inertia in a weightless environment. (Words)

**
Force
Mock Test .:.
Download the
mock test**

**1. A 467 gram air track
glider rests on a frictionless surface. A force of 2.1 N is exerted on it for a
distance of 35 cm.**

a. What is the glider’s
acceleration and final velocity? (4.50
m/s/s, 1.77 m/s)

b. What force would
accelerate the glider from rest to 3.1 m/s in 0.12 seconds?
(12.1 N)

c. If there had been a
force of 0.7 N opposing the 2.1 N force, what would have been the final
velocity? (1.45 m/s)

7:13
- Video of Murray solving this problem

**
2. A 3.4 kg object hangs on a string.**

a. What is the tension in
the string if the velocity is zero? What if the velocity is a constant 1.2 m/s
up? (33.32 N, 33.32 N)

b. What is the tension in
the string if the mass is accelerating at 1.8 m/s/s down?
(27.2 N)

c. If there is a tension of
38 N in the string, what is its acceleration?
(1.38 m/s/s up)

6:36
- Video of Murray solving this problem

**3. A 2.7 kg box has a
kinetic and static coefficient of friction with the floor of 0.12 and 0.35.**

a. What force is needed to
start it moving, and what to keep it moving at a constant speed?
(3.18 N, 9.26 N)

b. What force would be
necessary to accelerate the box once it is moving at 5.2 m/s/s in the direction
it is moving? (17.2 N)

c. What is the acceleration
of the box if it is moving to the right, and there is a force of 2.6 N to the
right? (-0.213 m/s/s – it is slowing down)

7:52
- Video of Murray solving this problem

**
**

**
4. A 24 kg rocket takes off from the surface of
the earth and reaches a height of 52 m in 1.89 seconds**

a. What is the rocket’s
acceleration? (29.1 m/s/s)

b. What must be the upward
force exerted by the engines? (934 N)

c. What acceleration would
an upward force of 430 N cause? (8.12
m/s/s upward)

7:47
- Video of Murray solving this problem