Physics Vectors/projectiles Quiz

Vectors A, B and C are being added using the head-to-tail method in order to determine the resultant. If the vectors were added in a different order, then the resultant would have ___?

• the same magnitude and direction

• the same magnitude but a different direction

• a different magnitude but the same direction

• both a different magnitude and a different direction

A 5-ton airplane normally flies at 200 km/hr. If it experiences a 50 km/hr tailwind, then its resultant velocity will be ___ km/hr?

• 30

• 50

• 150

• 250

Tags

NGSS.MS-PS2-2

A 3-ton airplane normally flies at 300 km/hr. If it experiences a 30 km/hr tailwind, then its resultant velocity will be ___ km/hr?

• 90

• 110

• 270

• 330

A city jogger runs 5.0 blocks due east and then 7.0 blocks due north. The magnitude of the jogger's displacement is ____ blocks?

• 8.6

• 12

• 24

• 74

The magnitude of the vertical velocity of a projectile is ALWAYS ____?

• constant

• Changing

• 9.8 m/s

• Zero

The horizontal velocity of a projectile is changing because ____?

• the force of gravity is not balanced

• the applied force balances the air resistance

• the force of air resistance is not balanced

• the horizontal velocity of a projectile is NOT changing

A 3-kg projectile is launched upward and rightward from ground level. The magnitude of the acceleration in the Y direction at the peak of its trajectory is ___ m/s/s?

• Zero

• approximately 30

• 9.8

• this cannot be determined without knowing the initial velocity

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

The acceleration of a projectile has the smallest magnitude ____?

• at the peak of its trajectory

• just prior to landing on the ground

• just after being launched

• A projectile's acceleration value is constant

Michael runs up a hill that is 30 m long, at an elevation of 30 degrees above the horizontal. What is his vertical displacement?

• 30 m

• 26 m

• 15 m

• 0 m

Given vectors P & Q, what is Q-P? P    ↘ Q  ←

• ↙

• ↗

• ↖

• ↘