Free Fall and Kinematics Problems

What is the objects average velocity?

• 0.6 m/s

• 0.75 m/s

• • 1.3 m/s

• 1.6 m/s

Tags

NGSS.MS-PS3-1

If Jim Hawkins is cruising on his solar board with an initial velocity of 4.3 m/s for and increases his speed at a rate of 1.2 m/s2. How far did he travel if he was flying for 8 seconds?

• 72.8 m

• 42.3 m

• 64.6 m

• 0.8 m

Tags

NGSS.MS-PS2-2

If the phoenix gem from the previous question is rolling at a speed of 0.3 m/s how far from the pile did the gem land?

• 0.38 m

• 0.27 m

• 8.6 m

• 1.2 m

Tags

NGSS.MS-PS3-1

An object in free-fall experiences a constant acceleration if air resistance is negligible. Is this statement correct?

• Yes

• No

• There’s a possibility but not always

• No answer unless proven otherwise.

Tags

NGSS.HS-PS2-1

An object in free-fall experiences a constant acceleration if air resistance is negligible. If Gian (56 kg) and Elaisa (45kg) will jump off the plane 700 ft above the ground at the same time, who among the two will reach the ground first if air resistance is negligible?

• Gian will reach the ground first since he is heavier than Elaisa

• Elaisa will be a little earlier than Gian since lighter object reach the ground first.

• Both Gian and Elaisa will reach the ground at the same time since they jumped at the same time.

• Both of them will not reach the ground, because they will automatically float.

Tags

NGSS.MS-PS2-4

What do you call the science of describing motion of objects using words, diagrams, graphs and equations?

• Physics

• kinematics

• problem-solving

• graphical method

Tags

NGSS.MS-PS3-1

This is the acceleration in the negative direction in the chosen coordinate system.

• deceleration

• acceleration

• negative acceleration

• positive acceleration

What is the constant value of acceleration due to gravity?

• 9.8 m/s²

• 9.8 m/s

• 35 ft/s

• 9.8 m/s² going down

Tags

NGSS.MS-PS2-4

Which of the following statements is true about free-fall?

• The force of acceleration causes all objects to fall towards the center of the Earth.

• If air resistance is negligible, all objects that will fall with have an acceleration of 9.8 m/s.

• All objects drop simultaneously will reach the ground at the same time even there is air resistance.

• aIf air resistance and friction are negligible, then in a given location, all objects fall toward the center of the Earth.

Tags

NGSS.MS-PS2-4

• A) 2.02 seconds

• B) 1.43 seconds

• C) 2.26 seconds

• D) 1.98 seconds

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4