Mechanics | Relativity Answers

a container of mass 200 kg rests of the back of an open truck. if the truck accelerates at 1.5 m/sec2, what is the minimum coefficient of static friction between the container and the bed of the truck required to prevent the container from the sliding off the back of the truck.

Graph the following table to determine if the relationship s = 0.5 at2 holds where t is
time s is distance and a is the acceleration. Determine the acceleration.

Time(±0.01)(s) Distance (±0.5)(m)
0 0.36
0.20 0.23
0.40 0.27
0.60 0.82
0.80 1.72
1.00 2.20
1.20 3.29
1.40 5.16
1.60 6.31
1.80 7.64
2.00 9.90

2 runners initially standing next to each other run away from each other with the speed,v and after 360m they are 360m apart. what is the velocity?

A planet moves around the sun in nearly circulas orbit.its period of revolution "T" depends upon 1)radius "r" of the orbit 2)mass "M" OF THE SUN 3) the gravitational constant "G".SHOW DIMENSIONALLY THAT T SQUARE IS DIRETLY PROPOTIONAL TO r cube

what is rotational analogue of power?

a train starting from rest picks up a speed of 20m/s in 200seconds. it continues to move at same speed for the next 500 seconds. it is then brought to rest in the next 100 seconds.
b) calculate the rate of uniform acceleration
c)calculate the distance covered by the train during retardation
d)calculate the average speed during retardation .

Barb is driving from Calgary to Edmonton at a speed of 120 km/h. Frank is travelling from Edmonton to Calgary at a speed of 112 km/h. Edmonton and Calgary are 298 km. How far from Calgary will they pass each other if they leave at the same time? How far from Calgary will they pass each other if Barb begins her journey 20 minutes before Frank?

An indoor track is to be designed such that each end is a banked semi-circle with a radius of 24 m. What should the banking angle be for a person running at speed v = 6.0 m/s?

A solar powered car is traveling at a constant speed around a track. What happens to the centripetal acceleration of the car if the speed is doubled?

a 1250 kg car is pulling a 325 trailer. together the car and trailer have an acceleration of 2.15 m/sec2. determine the net force on the car-trailer combination. what is the net force on the trailer?