Mechanics | Relativity Answers

a sandwich is thrown upwards by a street vendor with velocity 10 m/s to a person in the second floor window of a building. if the vendor releases the sandwich from 2 m above the ground and the second floor window is 5 m above the ground at what velocity will the sandwich be moving when it is caught?

Emily takes a trip, driving with a constant velocity of 81.5 km/h to the north except for a 22 min rest stop. If Emily's average velocity is 72.8 km/h to the north, how long does the trip take?

A runner hopes to complete the 10,000- m} run in less than 30.0 min}. After running at constant speed for exactly 27.0 min}, there are still 1100 m}} to go.The runner must then accelerate at 0.20 m{s}}^2 for how many seconds in order to achieve the desired time?

hello,
Calculate the acceleration if you push with a 21 N horizontal force on a 2 kg block on a horizontal friction-free air table

it is easier to to pull a roller than to push it .why?

How do masses interact with each other?

A merry-go-round makes one complete revolution in 8.35 s. A 25.04 kg child sits on the
horizontal floor of the merry-go-round 2.13 m
from the center.
What minimum coefficient of static friction
is necessary to keep the child from slipping?
The acceleration of gravity is 9.8 m/s^2.

You throw a ball straight up with a speed of 15 m/s. How long will it take the ball to come back to your hand?

A daredevil jumps a canyon 14 m wide. To do so, he drives a car up a 19° incline. What minimum speed must he achieve to clear the canyon? If the daredevil jumps at this minimum speed, what will his speed be when he reaches the other side?

A roller coaster travels 38 m at and angle of 35 above the horizontal. What are the roller coasters x- and y- components?