8028

Physics Kinematics Level: Misc Level

An olympic shot putter is doing his thing; His shotput ball, with a mass of 6.00 kg,Iands 20.0 meters from where he launched it at a 45.0 degree angle.Assuming he accelerated the shot uniformly for 0.4000 seconds, and neglecting the acceleration distance and any height difference between launch and landing (both not quite truei)with how much force did he ,,put,,the shot?

8027

Physics Kinematics Level: Misc Level

In the metric drag races (a previously -unreported olympic event),the hottest cars cross the finish line at speeds of 100 m/s.Assuming these cars accelerate uniformly and continuously,what is the magnitude of their average acceleration if the drag track is 400 meters long?

8026

Physics Kinematics Level: Misc Level

In the Olympic trials,winner of the first heat takes 42 seconds to run the 400 meter sprint.This race completes one lap around the track (assumed to be exactly 400m in circumference), and the finish line is located at the same point on the track where the sprinters began their race.What was the average velocity of the race winner?

8025

Physics Kinematics Level: Misc Level

Some students have gone to visit Valley of Fire State park to study rock formations.They park their car and then begin walking to various interesting areas.First,   they walk northeast (45%0 north of east) for 900.meters.Then,they walk 1.200 km in a direction 50.%0 north of west.Finally, they walk 0.700 km in a direction 30.0 south of west and then set up camp for the night.It took two hours for the students to walk from their car to their camp.

A How far is camp from the car (distance and direction (with respect to north)?

B What was the students, average speed between the car and camp?

C What was the students, average velocity between the car and camp?

7959

Physics Kinematics Level: Misc Level

A particle moves in space.Its position vector at time t is r(r)=t i+  sint j + cos t k. Find the velocity and accelration vectors at time t=0.

7631

Physics Kinematics Level: Misc Level

Prior to the diving competition on Zarkon, one of the intragalactic divers kicks a stray meteor off the 10.0- meter diving platform.i.e.The top of the platform is 10.0 meters avove the water.) Assuming she kicks the rock horizontally off the board at a speed of 7.00 m/s;

(a) How long does it take for the rock to hit the water (or whatever you swim in on Zarkon)?

(b) How far from the base of the diving platform does the rock hit the water?(take the base of the platform to be directly below the edge facing the water)

(c) What is the speed of the rock when it hits the water?

7628

Physics Kinematics Level: Misc Level

An Olympic shot putter is doing his thing; His shotput ball, with a mass of 6.00 kg, Iands 20.0 meters from where he launched it at a 45.0 degree angle.Assuming he accelerated the shot uniformly for 0.400 seconds, and neglecting the acceleration distance and any height difference between launch and landing (both not quite truei), with how much force did he'''put''the shot?

7627

Physics Kinematics Level: Misc Level

In the metric drag races (a previously-unreported Olympic eventi),the hottest cars cross the finish line at speed of 100 m/s. Assuming these cars accelerate uniformly and continuously, what is the magnitude of their average acceleration if the drag track is 400 meters long?

7626

Physics Kinematics Level: Misc Level

In the olympic trials, the winner of the first heat takes 42 seconds to run the 400 meter sprint. This race completes one lap around the track (assumed to be exactly 400 m in circumference) and the finish line is located at the same point on the track where the sprinters began their race. What was the average velocity of the race winner?

7625

Physics Kinematics Level: Misc Level

Some students have gone to visit Valley of Fire State Park to study rock formations. They park their car and then begin walking to various interesting areas. First, they wal northeast (45%0 north of east) for 900.metters. Then, they walk 1.200 km in a direction 50.%0 north of west. Finally, they walk 0.700 km in a direction 30.%0 south of west and then set up camp for the night. It took two hours for the students to walk from their car to their camp.

A. How far is camp from the (distance and direction (with respect to north))?

B.What was the students' average speed between the car and camp?

C. What was the students' average velocity between the car and camp?

7549

Physics Kinematics Level: Misc Level

A projectile is launched upward at an angle. what should this angle be with respect to the horizontal in order for the projectile to travel the farthest distance? Explain why?

7514

Physics Kinematics Level: Misc Level

Martha (a very fast cyclist )is riding her bike along a level, horizontal road when she unknowingly comes to a complete drop off (or cliff)at the end of the road. By remaining completely composed she lands perfectly on another level road exactly 121 m ahead and 18 m below and then continues on her way ( you may ignore air resistance).

a. Determine Martha ,s launce velocity along the original road (upon encountering the cliff).

b.Determine Martha,s total flight time.

c.Determine the velocity of Martha and her bike when she is exactly 12.5 m below the original road.

7504

Physics Kinematics Level: Misc Level

A projectile is fired horizontally with an initial speed of 50.0 m/s. Neglecting air resistance, what is the magnitude of the displacement of the projectile 3.00 s after it is fired?

a.29.4 m

b.44.1 m

c.150

d.156 m

e.98.6 m

7503

Physics Kinematics Level: Misc Level

An arrow is shot horizontally from a height of 4.9 m above the ground. The initial speed of the arrow is 45 m/s.Neglecting friction, how long will it take arrow to hit the ground?

a.9.2 s

b.6.0 s

c.1.0 s

d.1.4 s

e.4.6 s

7502

Physics Kinematics Level: Misc Level

A cannonball is aimed 30.0% above the horizontal and is fired with an initial speed of 125 m/s at ground level.How far away from the cannon will the cannonball hit the ground?

a.125 m

b.138 m

c.695 m

d.1040 m

e.1380 m

Displaying 1-15 of 388 results.