Dynamics

A 50 N of force was exerted by object A (10 kg) on object B (5 kg). How much force was exerted by object B on A based on the action force?

• 50 N

• 25 N

• 100 N

• 75 N

• 500 N

Tags

NGSS.MS-PS2-1

If object 1 is lighter than object 2 and they are both being pushed by THE SAME amount of force, which of the two will accelerate the most?

• The lighter (object 1) because the object's inertia in comparison to the heavier is easier to overcome hence, making object 1 speed up more than object 2.

• The heavier (object 2) because the more the inertia the more the object will accelerate

• They don't accelerate because they travel at the same rate

• They both have the same acceleration because the same amount of force is being exerted on the objects.

Tags

NGSS.MS-PS2-2

Sami wants to build the fastest racing bike possible. What is one way he can change the bike, so she has a better chance of winning the race?

• reduce the mass of the bike so it accelerates more quickly

• put on smoother tires to eliminate friction with the race track

• increase the mass of the bike to increase its gravitational field

• replace metal parts with plastic to decreases its magnetic field

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

What is the net force for an object with a constant velocity of 10 m/s?

• Zero

• Less than 10 N but greater than 0

• Greater than 10 N

• 10 N

• Less than 0 N

Tags

NGSS.MS-PS2-2

A body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force. This statement is known as

• Law of Inertia

• Law of Acceleration

• Law of Interaction

• Law of Gravitation

• Conservation of Energy

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NGSS.MS-PS2-2

Newton of force is equal to

• kg m/s

• kg m/s²

• kg /ms²

• m/ kg s²

• s/ kg m

While watching Netflix, the laptop was at rest on top of a table. What force(s) is(are) present on the laptop?

• None

• Normal Force

• Normal Force and Gravity

• Gravity

• Normal Force, Tension, and Gravity

Tags

NGSS.MS-PS2-4

What is The Second Law of Newton?

• Inertia

• F=ma

• F1 = -F2

• a = v/t

Tags

NGSS.MS-PS2-2

What are the units of Force

• Kilograms (kg)

• meters/seconds (m/s)

• Joules (J)

• Newtons (N)

A car accelerates from rest at a constant rate of 3 m/s^2. What is its velocity after 4 seconds?

• 12 m/s

• 15 m/s

• 9 m/s

• 18 m/s

Tags

NGSS.HS-PS2-1