Week 4 - Forces Capabilities

Description

11 Physics (11 Physics Fundamental Skills) Quiz on Week 4 - Forces Capabilities, created by Ryan Elwell on 05/12/2019.
Ryan Elwell
Quiz by Ryan Elwell, updated more than 1 year ago
Ryan Elwell
Created by Ryan Elwell almost 5 years ago
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Resource summary

Question 1

Question
Which of the following is the fundamental unit for a force?
Answer
  • Meter
  • kg*m/s
  • m/s^2
  • kg*m/s^2
  • m*kg^2
  • m*s/kg

Question 2

Question
Which of the following is Newton's Second Law?
Answer
  • An object at rest will remain at rest until acted upon by an outside, unbalanced force
  • Every force has an equal and opposite reaction force
  • Energy cannot be created or destroyed, only transferred from one object to another
  • The acceleration of an object is equal to the net force acting on it divided by the mass of the object

Question 3

Question
Which of the following is true for the force of gravity?
Answer
  • On Earth, it is always directed straight down, toward the Earth's center
  • It is always 9.8 m/s^2
  • It is also referred to as an objects 'weight'
  • It acts on all objects equally
  • Keeping everything else the same, if you double an object's mass, you double the force of gravity acting upon it.

Question 4

Question
What is the force of gravity acting on an object with a mass of 2.5 kg? Hint: You can use 10 m/s^2 for the acceleration due to gravity. The first blank is for the value. The second blank is for the units. F = [blank_start]25[blank_end] [blank_start]N[blank_end]
Answer
  • 25
  • N

Question 5

Question
The force of [blank_start]friction[blank_end] is the force that resists all motion.
Answer
  • friction
  • gravity
  • normal
  • tension
  • compression

Question 6

Question
Put the appropriate forces in the correct spot for this object, a box acceleration to the right due to an applied force.
Answer
  • Normal
  • Gravity
  • Friction
  • Applied

Question 7

Question
What is the net force acting on this object? First blank is for the value. Second blank is for the units. Third blank is for the direction. Net Force = [blank_start]17[blank_end] [blank_start]N[blank_end] [blank_start]Right[blank_end]
Answer
  • 17
  • N
  • Right

Question 8

Question
What is the net force on a object with the following forces acting upon it: First blank is the resultant value. Second blank is the units. Third blank is the angle from the + x axis. +x = 10 N - x = 13 N +y = 0 N - y = 4 N R = [blank_start]5[blank_end] [blank_start]N[blank_end] @ [blank_start]240[blank_end] degrees
Answer
  • 5
  • N
  • 240

Question 9

Question
[blank_start]Gravity[blank_end] is the force between all masses. [blank_start]Friction[blank_end] is the force that resists all motion. [blank_start]Normal[blank_end] is the force that resists an object being pulled into another object. It is always 90 degrees to its surface.
Answer
  • Gravity
  • Friction
  • Normal

Question 10

Question
A 10 kg box is moving on a rough surface with a speed of 1 m/s. It comes to rest in 2 seconds. What is the force of friction acting on the box?
Answer
  • 0.5 N
  • 5 N
  • 50 N
  • 500 N
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