Speed, Velocity, 1st law

Newton's first law of motion states

• Acceleration depends on the object's mass and on the net force acting on the object.

• An object at rest remains at rest, an object in motion remains in motion, unless acted upon by an outside force.

• For every action, there is an equal but opposite reaction.

• All of the above

Newton's first law is also known as the law of 

• acceleration

• speed

• distance

• inertia

Which of the following is a real life example of inertia? 

• Throwing a ball

• A seatbelt pulling you back when car suddenly stops.

• a ball falling from the sky

• riding a bike

The greater the ______________ of an object, the greater the inertia, greater the ___________________ required to change the motion.

• mass, force

• force, mass

• speed, velocity

• velocity, speed

Tags

NGSS.MS-PS2-2

Alex drove 1,080 miles with his parents in 18 hours in their Ford F150. What was the speed of their truck during the trip? 

• 60 mi/h

• 60 miles

• 60 hours

• .02 mi/h

Tags

NGSS.MS-PS3-1

The Angels are playing the Cubs. Mike Trout hits the baseball 360 feet left center. It takes the ball 20 seconds to leave the outfield. What was the speed of the baseball?

• 18 ft

• 18 ft/s

• 18 s

• .06 ft/s

Tags

NGSS.MS-PS3-1

The Angels are playing the Cubs. Mike Trout hits the baseball 360 feet left center. It takes the ball 20 seconds to leave the outfield. What was the velocity of the baseball?

• 18 ft

• 18 ft/s

• 18 ft/s left center

• .06 ft/s left center

Tags

NGSS.MS-PS3-1

Jeremie ran around the track at the YMCA for 2 hours. When he was done he figured that he had traveled 20 kilometers. What was his speed?

• 10 h

• 10 km

• 10 km/h left

• 10 km/h

Jeremie ran around the track at the YMCA for 2 hours. When he was done he figured that he had traveled 20 kilometers. What was his velocity?

• 10 h

• 10 km

• 10 km/h left

• 10 km/h

Ann walked 1.5 miles south to her house in 0.5 hours. What is Ann’s speed?

• 3 mi/h south

• 3 mi/h

• .75 mi/h south

• .75 mi/h