hey there is only ten questions here
i already did this test
will someone please help me and correct them
my answers look like this <===|
How long does it take light, traveling at 3.0 x 105 km/s, to reach the earth from the sun, 1.5 x 108 km away?
2: Two runners, A and B, start at the same instant over a 2.0 km course. Runner A covers the entire course at 10 km/h. Runner B runs 1 km at 11 km/h and the other kilometer at 9 km/h. By how many seconds does the winner beat his opponent?
7.3 s <===|
3: A parachute jump of 13400 m was made by Arabella Richardson. The time of descent was 23 min, 50 s. Calculate the average velocity during the drop.
9.37 m/s <===|
4: A train from New York City to Miami is scheduled to cover the 597 km distance to Richmond in 7 h, 15 min and to make the entire run of 2230 km in 26 h, 35 min. On a particular trip the train was 2 h late at Richmond and 3 h late a Miami. Calculate the average speeds of the train from Richmond to Miami.
80.31 km/h <===|
5: If you drive 100 miles in two hours your average speed will be:
75 mi/hr <===|
6: How long does it take a car to accelerate from 10 m/sec to 35 m/sec while going to the right at a constant acceleration of 5 (m/sec)/sec to the right?
5 Seconds <===|
7: The change in velocity over time defines what?
8: Your cow is standing on the tracks as a train is rapidly approaching! You are able to give the cow an acceleration of 20 m/s^2. How much time will it take you to pull the cow 2 meters to safety?
0.4 Seconds <===|
9: Resolve a displacement of 700 cm into two components along direction lines that lie on opposite sides of the displacement and each of which makes an angle of 30° with the displacement.
404 cm and 478 cm <===|
404 cm each
383 cm and 415 cm
415 cm each
10: Which of the following sentences contains an example of instantaneous velocity?
The car covered 500 kilometers in the first 10 hours of its northward journey.
19.6 m/sFive seconds into launch the rocket was shooting upward at 5000 meters per second.<===|
The cheetah can run at 70 miles per hour.
Moving at 5 kilometers per hour, it will take us eight hours to get to the base camp.