Science Schoolnet P.1.1-1.4

A ball is kicked and rolls for a long distance across a field. Which eventually causes the ball to slow and stop?

• friction

• gravity

• motion

• position

The table shows the weights of several students. Which student requires the most force to move his or her body?

• Daniel

• Maria

• Sally

• Tyler

Which best represents the relationship between force and the mass of an object?

• The greater the force, the smaller the object.

• The smaller the force, the smaller the object.

• The force on an object determines what density it has.

• The greater the mass of an object, the greater the force needed to move it.

When two objects are dropped from the same height, they will land at the same time. Which best explains why this happens?

• mass

• friction

• gravity

Matt had a toy truck weighing 15 grams and a toy car weighing 6 grams. Using the same amount of force on each toy, he pushed them both across his desk. The car reached the other side of the desk in 1.5 seconds, but it took the truck 3.5 seconds to reach the other side of the desk. Why did the car travel the same distance in a shorter amount of time?

• The car had less mass and traveled at a faster speed than the truck.

• The car had more mass and traveled at a faster speed than the truck.

• The truck had more mass and traveled at a faster speed than the car.

Martin needs to push a box up a ramp. Which forces will Martin work against MOST when he pushes the box up the ramp?

• friction and gravity

• inertia and magnetism

• magnetism and friction

• gravity and momentum

Katie was pulling a sled with her puppy in it. Katie’s sister then got into the sled with the puppy. How would the sled’s speed most likely change after Katie’s sister got into the sled?

• The speed would increase due to the change in mass.

• The speed would decrease due to the change in mass.

• The speed would increase due to the change in friction.

• The speed would decrease due to the change in gravity.

How long would it take a car traveling 60 miles per hour to get from Charlotte, NC to Atlanta, GA if the two cities are 240 miles apart? (speed = distance ÷ time)

• 2 hours

• 4 hours

• 6 hours

Which is a correct statement about the object shown in Graph W?

• The object speeds up during the trip.

• The object slows down during the trip.

• The object travels at a constant speed during the trip.

A train travels 100 meters in 10 seconds. It travels 300 meters in the next 10 seconds. By 30 seconds, it has traveled 900 meters. Which best describes the motion of the train?

• Its speed is decreasing.

• Its speed is increasing.

• Its speed cannot be measured.

• Its speed is remaining constant.