2D Motion Quiz

Find the direction and magnitude of the resultant vector for the drawing of two forces.

• Direction 90°
  Magnitude 139.0N
• Direction 52.3°
  Magnitude 195N
• Direction 52.3°
  Magnitude 139.0N
• Direction 37.7°
  Magnitude 139.0N

A vector is a ray with both ____________ and _____________.

• Wings and halos

• Space and time

• Direction and magnitude

• Radicals and exponents

A car moved 60 km East and 90 km West. What is the displacement?

• 30 km, West
• 60 km. East
• 90 km
• 150 km

Solve for the missing angle. Round the nearest degree. 

• 53

• 13

• 37
• 23

You get off the freeway going east at 90 km/h and slow to 45 km/h in 5 seconds, what is your acceleration?

• 9 km/h/s

• 8 km/h/s

• -9 km/h/s east

• -9 km/h/s west

Tags

NGSS.HS-PS2-1

What is v_iy for a horizontal launch ALWAYS?

• 0 m/s
• -10 m/s
• 10 m/s
• Depends on v_x

A football is kicked into the air at an angle of 45 degrees with the horizontal. At the very top of the ball's path, its acceleration is _______.

• entirely vertical

• entirely horizontal

• zero

• both horizontal and vertical

Tags

NGSS.HS-PS2-1

A roller coaster travels 100 ft at an angle of 30◦ above the horizontal. How far does it move horizontally?

• 86.6 ft

• 50 ft

• 57.7 ft

• 100 ft

Janet jumps horizontally off a 10m high diving platform with a horizontal velocity of 2 m/s. How far does she land away from the platform?

• 4.9 m

• 2.86 m

• 1.43 m

• 1.39 m

Tags

NGSS.MS-PS2-2

Two spheres of equal mass, A and B, are rolled off the edge of a 2.0 m high bench. Sphere A has a horizontal velocity of 5.0 m/s and sphere B has a horizontal velocity of 2.5 m/s.

Which ball will be in the air for the greater amount of time?

• Ball A

• Ball B.

• They will be in the air for the same amount of time.

• here is not enough information to decide.