physics_motion_review

A description of the speed and direction of an object's motion

• Velocity
• Speed
• Acceleration
• Vector

displacement

• the change in position of an object

• the amount of space between one point and another

• the speed and direction of moving objects

• the point or place where something begins

What distance did the creature travel?

• 23 m

• 9 m

• -9 m

• -23 m

A bus starts from rest and accelerates to 14 m/s in 4 s. What is the average acceleration of the bus?

• 3.5 m/s2

• 5.9 m/s2

• 10.5 m/s2

• 24 m/s2

Which of the following objects is accelerating?

• A car driving in a northwest at a constant speed of 35 mph.

• A car driving southwest at a constant speed of 35 mph.

• A car driving in a circle at a constant speed of 35 mph.

  Back

• A car driving south at a constant speed of 45 mph.

What happens to the horizontal velocity of a projectile as it travels along the curved path?

• increases

• decreases

• stays the same

• none of these

What is the vertical acceleration of a projectile due to gravity?

• -9.0 m/s

• -9.8 m/s

• -9.8 m/s2

• -9.08 m/s2

A coin tossed vertically upward and it reaches the highest point in 7.0s. at the highest point, the velocity is _______.

• 9.8 m/s

• 0

• 9.8 m/s² 

• 98 m/s²

A boat heading north crosses a wide river with a velocity of 10.00 km/h relative to the water. The river has a uniform velocity of 5.00 km/h due east. What formula would you used to Determine the boat’s speed with respect to an observer on shore.

• subtraction (10-5)

• addition (10+5)

• division (10/5)

• Pythagorean Theorem (A² + B² = C²)

• Multiplication (10*5)

Answer explanation

Given the magnitude & direction of the resultant, find the horizontal & vertical components.

• Horizontal 63.9
   Vertical 44.7
• Horizontal 7.3
   Vertical 34.2
• Horizontal -63.9
   Vertical 44.7
• Horizontal -7.3
   Vertical 34.2