Speed/Velocity & Bal/Unbal Forces

Sarah is conducting an experiment with a toy car. She measures that the car travels 100 meters in 20 seconds. What is the car's speed?

• 2 meters per second

• 5 meters per second

• 10 meters per second

• 20 meters per second

Mark is on a road trip, and he records that he drives 200 miles north in 4 hours. What is his velocity?

• 200 miles per hour

• 50 miles per hour south

• 50 miles per hour north

• 4 hours per mile

David is measuring the speed of a river's current. He observes that the river flows 2 meters per second from east to west. What is the river's velocity?

• 2 meters per second

• 2 meters per second east

• 2 meters per second west

• 2 meters per second north

Tim is riding his bike on a circular path. He completes one lap, which is 5 kilometers, in 30 minutes. What is his average speed?

• 5 kilometers per 30 minutes

• 6 kilometers per hour

• 10 kilometers per hour

• 30 kilometers per 5 minutes

Maria is flying a kite on a windy day. She releases the kite, and it moves steadily 100 meters upward in 10 seconds. What is the kite's velocity?

• 10 meters per second

• 100 meters per second

• 10 meters per second upward

• 100 meters per second upward

Lisa is riding her bicycle to the store. She covers a distance of 5 kilometers to the north and then 3 kilometers to the south in 1 hour. What is her average velocity for the entire trip?

• 5 kilometers per hour minutes north

• 3 kilometers per hour south

• 2 kilometers per hour south

• 8 kilometers per hour south

David is observing the motion of a car. He notes that the car travels 60 miles in 1 hour in a straight line to the west. What is the car's velocity?

• 60 miles per hour

• 30 miles per hour

• 60 miles per hour west

• 2 hours per 60 miles

Mark is riding his bike on a straight road with a constant speed. What can be inferred about the forces acting on Mark's bike?

• Balanced forces are acting on the bike.

• Unbalanced forces are acting on the bike.

• No forces are acting on the bike.

• The bike is not moving.

David is playing tug-of-war with his friends. The two teams are evenly matched, and neither side can pull the rope in their direction. What type of forces are acting on the rope?

• Balanced forces

• Unbalanced forces

• Opposite forces

• Zero forces

Tags

NGSS.MS-PS2-2

Emily is observing a ball sitting on a table. What is the state of motion of the ball according to Newton's First Law of Motion?

• The ball is at rest.

• The ball is moving at a constant speed.

• The ball is accelerating.

• The ball is changing shape.