Reference no: EM131410699

Please help me with the following questions.

1. Identify the vector and scalar quantities from the following list. {Temperature, weight, displacement, velocity, speed, time, mass, acceleration}

Vector                                                              Scalar

2. A hiker walks along the city streets 4.0 km north, then 3.0 km west. What is the magnitude of the resulting displacement vector?

Key Idea                                               Stock of Data and

Solution

Sanity Check

3 From the previous problem, what is the direction of the displacement vector in degrees from North? Round to 2 digits.

Key Idea                                               Stock of Data and

Solution

Sanity Check

4. Proceeding from landmark A, a vehicle moves along city streets 10 km north, then 14.2 km northeast, and finally 2 km south, and arrives at landmark B. What is the distance traveled, and the magnitude of the displacement between the two landmarks?

Key Idea                                               Stock of Data and

Solution

Sanity Check

5. From the previous problem, what angle east of north does the displacement vector lie?

Key Idea                                               Stock of Data and

Solution

Sanity Check

6. Calculate the centripetal acceleration (in m/s²) of a  car traveling 20 m/s around a curved road with a radius of 10 m.

Key Idea                                               Stock of Data and

Solution

Sanity Check

7 A hot air balloon travels 60 degrees north of east at 2 km/hr . In 2 hours time how far eastward and northward will the balloon have traveled?

Key Idea                                               Stock of Data and

Solution

Sanity Check

8. A rock is launched with an initial velocity of 10 m/s at an angle of 45 degrees above the horizontal. What is the horizontal component of its velocity?

Key Idea                                               Stock of Data and

Solution

Sanity Check

9. A rock is launched over level ground with an initial velocity of 15.0 m/s at an angle of 20 degrees above the horizontal. What is the projectile's time of flight?

Key Idea                                               Stock of Data and

Solution

Sanity Check

10. An inflatable life raft is released from an air plane at 500 m altitude, in level flight, with an air speed of 20 m/s in the horizontal direction. How long before the raft strikes the water? How far from the release point does the raft strike the water?

Key Idea                                               Stock of Data and

Solution

Sanity Check