Projectile Motion & Components

An object is launched horizontally. Which of the following is true about the horizontal motion? Select two.

• $a=10\ \frac{m}{s}$ per second down

• $a=0$

• $v_0=0$

• $v$ is constant

How do you know an object is in freefall?

• The object is falling.

• The object has air resistance.

• The only force present is the force of gravity.

• The object is moving upward in the air.

Tags

NGSS.HS-PS2-1

An object is dropped. Which of the following is true about the vertical motion? Select two.

• $a=10\ \frac{m}{s}$ per second down

• $a=0$

• $v_0=0$

• $v$ is constant

Tags

NGSS.HS-PS2-1

An object is launched horizontally. Which of the following is true about the vertical motion? Select two.

• $a=10\ \frac{m}{s}$ per second down

• $a=0$

• $v_0=0$

• $v$ is constant

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

What is the best method to approach a projectile motion problem?

• Check the units of the answers.

• Create two kinematics charts: one vertical one, horizontal.

• Pick an equation.

• Use velocity divided by time.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

To find the x-component of velocity V that is angled above the horizontal an angle θ, which equation should you use?

• V cosθ

• V sinθ

• cosθ

• sinθ

To find the y-component of velocity V that is angled above the horizontal an angle θ, which equation should you use?

• V cosθ

• V sinθ

• cosθ

• sinθ

To find the component of gravitational force going down an incline of angle θ, what equation should be used?

• mg cosθ

• mg sinθ

• cosθ

• sinθ

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

When an object is on an incline of angle θ, what does the normal force always equal?

• mg cosθ

• mg sinθ

• cosθ

• sinθ

Tags

NGSS.HS-PS2-1

Given horizontal Tension of a string, Tx, and vertical Tension of a string, Ty, how do you find the total Tension?

• Add them.

• Subtract them.

• Use Pythagorean theorem.

• Use trig functions.

Tags

NGSS.HS-PS2-1