Unit 3 Review

Chris is driving North for 25 miles, then turns and drives East for 45 more miles. Which tool would you use to calculate his displacement?

• Pythagorean Theorem

• Addition

• Sine

• Cosine

If given the magnitude and direction of a projectile's velocity, which Trigonometric function should be used to find the x-component of the object's velocity?

• Sine

• Cosine

• Tangent

If given the magnitude and direction of a projectile's velocity, which Trigonometric function should be used to find the y-component of the object's velocity?

• Sine

• Cosine

• Tangent

Which Trigonometric Function utilizes the opposite and adjacent sides of a right triangle with respect to an angle of that triangle?

• Cosine
• Sine
• Tangent

An airplane is flying North with a velocity of 240 km/hr. If it experiences a headwind of 30 km/hr South, what is its resultant velocity?

• 270 km/hr North
• 210 km/hr South
• 240 km/hr South
• 210 km/hr North

Tags

NGSS.MS-PS2-2

Mr. C draws a free body diagram for an object and states that there is no net force acting on the object. Which option below supports this statement?

• The object is slowing down

• The object is speeding up

• The object is changing direction

• the object is moving with constant velocity

• The object is sitting still

Tags

NGSS.HS-PS2-1

Two children are fighting over a toy. One is pulling the toy to the left with 25 N of force, while the other is pulling to the right with 31 N of force. What is the net force on the toy?

• 25 N to the right
• 6 N to the left
• 6 N to the right
• 31 N to the left

Tags

NGSS.HS-PS2-1

Which statement below is correct about the free body diagram shown?

• The net force is in the positive x-direction

• The net force is in the negative x-direction

• The net force is in the positive y-direction

• The net force is in the negative y-direction

Tags

NGSS.HS-PS2-1

A football is thrown at an angle of 45 degrees to the ground and travels through the air for 4.2 seconds. At what point does the football have a velocity of 0 m/s in the y-direction?

• 1.5 seconds

• 2.1 seconds

• 3.5 seconds

• Never

The horizontal velocity of a projectile remains constant and independent from its velocity in the y-direction.

• True

• False

• Not enough information to answer