Ashopper in a supermarket pushes a cart with a force of 48.0 n directed at an angle of 25.0° below the horizontal. the force is just sufficient to balance various friction forces, so the cart moves at a constant speed.

a. find the work done by the shopper as she moves down a 50.0 m length aisle.
b. what is the net work done on the cart?
c. the shopper goes down the next aisle, pushing horizontally and maintaining the same speed as before. if the work done by frictional forces doesn't change, would the shopper's applied force be larger, smaller , or the same? what about the work done on the cart by the shopper?

What is the order of the moon, earth, and sun in a lunar eclipse and a solar eclipse?

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?

The chart shows the costs and shipping times for materials that a company needs to build a new product. which describes the best trade-off if the company needs to start building their product within the next two years? they should order the domestic materials because it is always best to choose the fastest shipping time. they should order the imported materials because it is always best to choose the lowest cost for materials. since the shipping time is longer, they should order the domestic materials because the additional cost is worth it to get the materials in time. even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.