Study Guide for Test 01-Part One

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Stnd 03: Kinematics
In 1969 astronauts first traveled to the Moon in the Saturn-5/Apollo spacecraft.

Lunar Module	Saturn V-Apollo Spacecraft	Command Module

This rocket ship blasted off from the launch pad in Florida and was propelled with ever increasing speed upwards through the Earth’s atmosphere flying towards the Moon.
Which one of the following graphs best represent the motion of this rocket ship after it blasted off from the launch pad?

a.		c.
b.		d.

Stnd 03: Kinematics
A basketball player shoots a free-throw. The motion of the basketball is shown below.

Describe the motion of the basketball after it leaves the player’s hands, and explain how this is an example of acceleration.

a.	The ball moves downwards and then upwards in an arc. This is acceleration because of the change in force pulling the ball downwards.
b.	The ball travels in a horizontal line to the basket with increasing speed. This is acceleration because of the change in velocity.
c.	The ball travels in a curved trajectory in two directions with decreasing speed. This is acceleration because of the change in direction.
d.	The ball travels in curved trajectory in a single direction with decreasing speed. This is acceleration because of the change in velocity.

Stnd 03: Kinematics
A car traveling to the West begins to slow down as it approaches a traffic light.

Which statement concerning the motion of the car is correct?

a.	The car’s acceleration is negative. The car’s velocity is also negative.
b.	The acceleration of the car is negative, but the velocity is positive.
c.	The car’s acceleration is positive. but the velocity is negative
d.	The car’s acceleration is positive. The cars velocity is also positive.

Stnd 04: 2nd Law of Motion
The acceleration due to gravity on Earth is 9.8 ,/s². The force acting on an object on Earth is 16 Newtons.
What is the mass of this object on Earth?

a.	The object’s mass is 156.8 kilograms
b.	Mass of the object is 2.6 kilograms
c.	The mass is .6125 kilograms
d.	Mass of the object is 1.63 kilograms

Stnd 04: 2nd Law of Motion
A small car and big truck are driving down a two-lane highway on a rainy day. The car is in the left lane, and the truck is in the right lane. Both vehicles are traveling North at the same speed (70 MPH). Both drivers see a traffic jam up ahead, and they both slam on theirs brakes with all of their might at the same moment. The car comes to a halt after traveling 30 feet. The truck, however, does not halt until 120 feet.
Why does it take the truck longer to come to a complete stop even though both vehicles were moving at the same speed?

a.	The mass of the car is much greater than the mass of the truck.
b.	Because both cars were maintaining the same constant velocity.
c.	The mass of the truck is much greater than the mass of the car.
d.	Because vector quantities and scalar quantities are not the same thing

Stnd 04: 2nd Law of Motion
Newton’s 2nd Law of Motion states that force is equal to mass times acceleration.
If the force acting on the object stays the same but the mass increases, what is most likely to happen to the acceleration of the object?

a.	Velocity will change but the speed and direction will remain constant.
b.	Acceleration will increase
c.	Acceleration will stay the same
d.	Acceleration will decrease

Stnd 05: 3rd Law of Motion
A man is pushing a wheelbarrow full of dirt as he works on a project in his back yard.

Compared to the magnitude of the force exerted on the wheelbarrow by the man, the magnitude of the force exerted on the man by the wheelbarrow is...?

a.	zero	c.	somewhat smaller
b.	larger	d.	the same

Stnd 05: 3rd Law of Motion
The diagram below shows a 5.00 kg block at rest on a horizontal, frictionless table. Gravity is acting on this block, and the acceleration of gravity on Earth is 9.807 m/s².

Which of the following diagrams best represents the force exerted on the block by the table?

Stnd 05: 3rd Law of Motion
Both dogs in the picture below have the same mass, and they both are exerting the same amount of force on the rope toy,

What is most likely to happen when the rope toy breaks in the middle as a result of the forces the dogs are exerting?

a.	One dog will be thrown backwards while the other dog will be able to move forwards.
b.	As the two dogs are the same mass, neither dog will be thrown backwards.
c.	The breaking of the rope toy will create unbalanced forces that only affect one of the dogs, causing one dog to be thrown backwards.
d.	The dogs will be thrown backwards, in opposite directions from each other, the same distance.

10.

Stnd 05: 3rd Law of Motion
The magnitude of the force that a baseball bat exerts on a ball is 50 Newtons

The magnitude of the force that the ball exerts on the bat is...?

250 N

50 N

5.0 N

10 N

Multiple Response
Identify one or more choices that best complete the statement or answer the question.

11.

Stnd 03: Kinematics
Free-body diagrams show the magnitude and direction of all forces acting on an object.

Multi-Select Question
Select the answer choices below that describe the motion of the object represented in the
Free Body Diagram above (Select 2 choices).

a.	The object will accelerate to the right
b.	The object will not have any acceleration up or down.
c.	The object will accelerate to the left
d.	The object will have upward motion.
e.	The object will have downward motion

12.

Stnd 04: 2nd Law of Motion
On Earth an astronaut weighs 980 Newtons (about 220 pounds) and has a mass of 100 kilograms. On the Moon, the same astronaut weighs 162.2 Newtons (about 37 pounds).

Moon	Astronaut	Earth

(Multi-Select Question) What is the mass of this astronaut on the Moon, and what is the acceleration acting on the astronaut’s body when she is standing on the Earth? (select 2 choices)

a.	Acceleration on Earth: 1.6 m/s/s
b.	Mass on the Moon: 100 kilograms
c.	Acceleration on Earth: 9.8 m/s/s
d.	Force on the Moon: 162.2 Newtons
e.	Mass on the Moon: 37 kilograms