4. Motion in a plane

If the displacement of a body is proportional to square of time then:

• The body moves with uniform velocity.

• The body moves with uniform acceleration.

• The body moves with increasing acceleration.

• The body moves with decreasing acceleration.

Choose the incorrect option:

• $\overrightarrow{A}$ . $\overrightarrow{B}$ = $\overrightarrow{B}$ . $\overrightarrow{A}$

• i.j=0

• k.k=0

• j.j=1

If you throw a baseball straight up, what is its velocity at the highest point?

• 9.8 m/s²
• 9.8 m/s
• 0 m/s²
• 0 m/s

Tags

NGSS.HS-PS2-4

Cross product of i x j

• k
• -k

What is the magnitude of the resultant vector, r?

• 3

• 4

• 5

• 7

When the only force on an object is gravity:

• free fall

• acceleration

• gravity

• range

Tags

NGSS.HS-PS2-4

identify the correct option representing vector addition a + b =c

• 
• 
• 
• 

identify the correct option representing a - b =c

• 
• 
• 
• 

What kind of quantity has both a magnitude and a direction?

• scalar
• vector
• frame of reference
• time

_____ is/are measured in units of m/s in Physics.

• Speed and velocity
• Distance and displacement
• Acceleration
• Vectors