A boat is moving at the rate of 15.0 meters per second. It's speed is then decreased uniformly to 3.0 meters per second. It takes 4 seconds for the speed to decrease. What is the magnitude of the deceleration of the car?

Kenneth ran a marathon (26.2 miles) in 5.5 hours. What was Kenneth's average speed? (Round your answer to the nearest tenth.) a) 0.2 mphb) 4.8 mphc) 5.5 mphd) 144.1 mph

Over the past 150 years, what has happened to the amount of forest cover in Minnesota? A) It has decreased and coniferous forest has replaced parts of the deciduous forest B) It has increased and coniferous forest has replaced parts of the deciduous

Why is blood important

A 7.0kg ball is given an initial velocity of 14m/s and then is rolled along the floor. A friction force of 2.5N opposes its motion. For what length of time will it roll before stopping.

Each milligram of glucose has the same amount of energy available to do work. The series B test tubes produced more bacteria per milligram of glucose than did the series A test tubes.

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.