# Fundamentals of Physics Study Set 2

Physics & Astronomy

## Quiz 4 :

Motion in Two and Three Dimensions

Looking for Introductory Physics Homework Help?

Sally starts from home, walks 300 m east and then 500 m south, and arrives at her school.How far, in a straight line, is Sally's school from her home?

Multiple Choice

Answer:

From your window you can see a high-rise building several blocks away.You check the map and see that the building is 560 m away from you in a straight line, in a direction 30° south of east.However, the roads are all east-west and north-south.If you want to walk from your house to the building, how far in each direction do you have to walk?

Multiple Choice

Answer:

A particle goes from x = -2 m, y = 3 m, z = 1 m to x = 3 m, y = -1 m, z = 4 m.Its displacement is:

Multiple Choice

Answer:

A jet plane in straight horizontal flight passes over your head.When it is directly above you, the sound seems to come from a point behind the plane in a direction 30 from the vertical.The speed of the plane is:

Multiple Choice

Answer:

An object moves from x = -2.1 m, y = 3.7 m, z = 1.4 m to x = 3.3 m, y = -1.1 m, z = 4.2 m in a time of 5.3 s.What is its average velocity?

Multiple Choice

Answer:

An object moves from x = -2.1 m, y = 3.7 m to x = 3.3 m, y = -1.1 m in a time of 5.3 s.What is its average velocity?

Multiple Choice

Answer:

A plane traveling north at 200 m/s turns and then travels south at 200 m/s.The change in its velocity is:

Multiple Choice

Answer:

An object has a velocity of (5.4 m/s)− (4.8 m/s).Over a period of 1.3 s, its velocity changes to (1.7 m/s)+ (5.9 m/s).What is its acceleration?

Multiple Choice

Answer:

The velocity of an object as a function of time is given by v = (12.5t − 7.2t

^{2})+ (4.3t^{3}).What is its acceleration as a function of time? Multiple Choice

Answer:

An object is at rest at x = 0 m, y = 0 m.It accelerates at a rate of (−3.2 m/s

^{2})+ (8.6 m/s^{2}).After accelerating for 4.7 seconds its coordinates are: Multiple Choice

Answer:

Two bodies are falling with negligible air resistance, side by side, above a horizontal plane.If one of the bodies is given an additional horizontal acceleration during its descent, it:

Multiple Choice

Answer:

Identical guns fire identical bullets horizontally at the same speed from the same height above level planes, one on the Earth and one on the Moon.Which of the following three statements is/are true? I.The horizontal distance traveled by the bullet is greater for the Moon.
II.The flight time is less for the bullet on the Earth.
III.The velocities of the bullets at impact are the same.

Multiple Choice

Answer:

Which of the curves on the graph below best represents the vertical component v

_{y}versus t for a projectile fired at an angle of 45 above the horizontal? Multiple Choice

Answer: