Mechanics | Relativity Answers

Two geological field teams are working in a remote area. A global positioning system (GPS) tracker at their base camp shows the location of the first team as 40 km away, 18° north of west, and the second team as 30 km away, 32° east of north. When the first team uses its GPS to check the position of the second team, what does the GPS give for the following?
(a) the second team's distance from the first team

(b) the second team's direction from the first team, measured relative to due east

high-speed test vehicle is brought to rest by throwing out a drag chute behind it, causing a constant acceleration of −13 m/s2. The vehicle has a velocity of 56 m/s when the chute is deployed. What is the minimum length of track needed for this process?

A person walks 34 m East and then walks 36 m at an angle 34◦ North of East.
What is the magnitude of the total dis- placement?
Answer in units of m

Sally travels by car from one city to another. She drives for 25.0 min at 59.0 km/h, 50.0 min at 39.0 km/h, and 22.0 min at 40.0 km/h, and she spends 6.0 min eating lunch and buying gas.
(a) Determine the average speed for the trip.


km/h
(b) Determine the total distance traveled.


km

Find the range of a ball which was when projected with initial velocity 29.4 m/s it just passes over a 4.9 m high pole.

A cubic box of volume 6.15 x 10-2 m3 is filled with air at atmospheric pressure at 15C. The box is closed and heated to 185C. what is the net force on each side of the box?

A helium-filled balloon escapes a child’s hand at sea level and 20.0C. When it reaches an altitude of 3600, where the temperature is 5.0C and the pressure only 0.68 atm, how will its volume compare to that at sea level?

A basketball player achieves a hang time of
position (m)
0.505 s in dunking the ball.
What vertical height will he attain? The
acceleration of gravity is 9.8 m/s2 . Answer in units of m

Refraction is a measure of the ------------ as a wave passes from medium to another

velocity
frequency
wavefront
displacement

At a certain time a particle had a speed of 18 m/s in the positive x direction, and 2.4 s later it's speed was 30 m/s in the opposite direction. What is the average acceleration of the particle during the 2.4 s interval?