Kinematics

A golf ball is struck at a 40° angle with a speed of 18 m/s. Determine the hang time of the ball and the distance it travels.

• t=1.2 seconds, x=16 meters

• t=2.3 seconds, x=31.7 meters

• t=1.5 seconds, x=17.4 meters

• t=2.3 seconds, x=26.7 meters

A dog basks in the sun when he sees a squirrel and bolts after it. If the dog accelerates at +1.6 m/s/s, how far does he run in 3 seconds?

• 4.8 meters

• 45 meters

• 1.6 meters

• 7.2 meters

Tags

NGSS.HS-PS2-1

An athlete jumps a distance h into the air. By what factor must he increase his initial speed in order to jump to 2.5 h?

• 6.25Vi

• 1.25Vi

• 1.58Vi

• 2.5Vi

A construction worker on a ladder is 2.2 meters off the ground when he throws a pencil horizontally at a speed of 3 m/s toward a fellow worker on the ground. How far from the ladder must the co-worker be in order to catch the pencil?

• 2 meters

• 4 meters

• 6 meters

• 8 meters

In deep space far from any planets and suns you throw a marble and watch it move in a straight line at a constant speed until its out of sight. What keeps the marble moving?

• The force you threw it with.

• Friction

• Inertia

• Gravity

A marble rolls 0.75 meters across a table in 0.68 seconds. If the marble leaves the 0.97 meter high table, determine where to put a bulls eye on the floor from the base of the table.

• 48 cm

• 26 cm

• 75 cm

• 42 cm

A golf ball is dropped from the top of the bleachers 11 meters from the ground. Determine the final speed of the ball just before it hits the ground.

• 6 m/s

• 9 m/s

• 12 m/s

• 15 m/s

Tags

NGSS.HS-PS2-1

On a mysterious orb in a distant galaxy, some alien creatures conduct an experiment to verify the value of "g" on their planet. They drop a rock from the ceiling 2.7 meters high and record the time it takes to hit the ground to be 0.61 seconds. Find the value of "g"

• 7.3 m/s/s

• 14.5 m/s/s

• 9.8 m/s/s

• 11.8 m/s/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Determine the average speed from the graph for the first 4 seconds.

• 6.9 m/s

• 27.5 m/s

• 0 m/s

• 17.6 m/s

At what time is the object at rest in the X vs. t graph shown?

• only at t=0

• around 37 seconds

• from 0 to 20 seconds

• never, it is always moving

Tags

NGSS.HS-PS2-1