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- a toy car rolls 10 meters (m) across the floor. it takes 5 seconds (s) to cross this distance. what is the speed of this car?A scientist was investigating if differences in the frictional work performed on a model car can change depending on its mass (in grams) and whether the car moves up or down an inclined plane. They decided to measure the amount of frictional force experienced by the model car and the distance it traveled in meters. The scientists were able to evaluate the frictional work using the following data. Mass (g) Distance (m) Force Work Done by Friction (J) car going up the incline 100 39 0.063 2.457 car going down the incline 70 39 0.2309 ? It is known that the relationship between force and distance determines the work done by friction (W+). W₁ = fd Wf work done by friction f = force d = distance Question: How much work done by friction was exerted on the car as it moved down the inclined plane? You may use a calculator. 1 2.457 9.005 11.46 16.16 PREVIOUS FINISHWhen Galileo Galilei rolled a ball down an inclined plane, it traveled 2 meters in the first second, and a total of 8 meters in the first two With vo = 0, what was its acceleration on this inclined plane? 0 meter per second2 0 meters per second2 0 meters per second2 0 meters per second2 0 meters per second2
- Define van der Waals forceNow, the bears I live with average, the males, eight to twelve hundred pounds [360 to 540 kg]. They're the largest bears in the world. They've been clocked at 41 [mph] and they've run a hundred meter dash in 5.85 seconds, which a human on steroids doesn't even approach. 1. Compute the speed of a grizzly bear using Mr. Treadwell's hundred meter dash statement. 2. Compute the momentum of a grizzly bear using the speed you calculated in part 1 and the average mass of 450kg. 3. How fast would a 250 lb man have to run to have the same momentum you calculated in part 2? (You may have to convert units first). 4. How fast would a 4000 lb car have to drive to have the same momentum you calculated in part 2? (You may have to convert units first)The “mean-speed theorem” for calculating average velocity under constant acceleration, developed by Thomas Bradwardine and the Mertonian Calculators at Oxford University, is expressed algebraically as: density = weight/volume (m1)(v1) = (m2)(v2) C. (vm) = 1/2 (v0 + vf) s = (v0)(t) + 1/2 (a)(t2) velocity = distance/time
- Suppose as astronaut has landed on Mars. Fully equipped, the astronaut has a mass of 130 kg, and when the astronaut gets in scale, the reading is 477 N. What is the acceleration due to gravity on Mars?The “mean-speed theorem” for finding average velocity under constant acceleration, proposed by the Oxford Calculators, and demonstrated geometrically by Nicole Oresme, is expressed algebraically as: density = weight/volume (m1)(v1) = (m2)(v2) (vm) = 1/2 (v0 + vf) s = (v0)(t) + 1/2 (a)(t2) velocity = distance/timeDirection: Convert the following. Show your computation/solution. 1. 9 inches to cm 2. 5 feet 5 inches to cm 3. 5 feet 9 inches to meter 4. 99 kg to lbs 5. 120 lbs to kg
- A study was done to find if different tire treads affect the braking distance of a car. What is the independant and dependant variable and constant of the sanario?The data was collected at 100 frames/second. Calculate the velocity and acceleration for each of the joints for the X(horizontal)coordinate. Also, graph the displacement of all three joints (ankle, knee and hip) for the Y (vertical) coordinatewhat is the calculated change over time from slope? and what condition changed the fastest?