Recent content by ericka141

So the answers I have to choose from are: a. The force from the hailstorm and the rainstorm would be almost the same. Incorrect b. The force of the hailstorm would be close to twice that of the rainstorm. c. The force of the hailstorm would be close to four times times that of the rainstorm. d...

Homework Statement "Think of a rainstorm. Each raindrop hits your roof, exerting a certain amount of force for a short time until it comes to a stop. Now think of a hailstorm instead. All of the raindrops are now hard little ice pellets of the same size and mass. Using common sense and what...

So is there only work being done in the vertical direction, aka. the force is takes you to physically hold the bag up?

Homework Statement "You carry your 14.0 kg bag of textbooks horizontally 1.8 m above the ground, at constant velocity for a distance of 25 m. Ignore wind resistance. How much work do you do on the bag in the process?" Homework Equations W=Fd F=ma The Attempt at a Solution If work...

Homework Statement "You are a 115-kg football player. You go stand on your bathroom scale, but the scale is not perfectly horizontal. It is instead inclined at an angle of 40° from the vertical (which makes it rather hard to stand on, but whatever). The scale is screwed into the floor so it...

I'm confused about a question where it refers to the angle of a bathroom scale on the floor as "40 degrees from the vertical". What does this look like?

Then how would I use 1/cos2θ=1+tan2θ ??

Homework Statement You shoot a cannon at a distant cliff. The cliff is 170m high and 550m away, with the launch speed of the projectile being 110 m/s. Wind resistance is ignored. At what angles, relative to the horizontal, should the projectile be shot to hit the target? Hint: 1/cos2θ =...