Recent content by eddiedowen

Homework Statement What is the magnitude of the average force required to stop an 1500kg car in 8.0s if the car is traveling at 75km/h ? Homework Equations The Attempt at a Solution

Homework Statement What is the velocity of a 90kg astronaut traveling in outer space with constant velocity? Homework Equations W=mass*acceleration The Attempt at a Solution

I have the diagram all written out, I just don't know how to find the time. I have everything else solved except for the time.

How do I know what the other angles are aside from 90 degrees?

Homework Statement A small aircraft cruises at a speed of 80 m/s in still air. The plane is scheduld to fly to a destination that is 600 km due west on a day on which the wind is blowing at 18 m/s from south to north. It travels in a direction of 13 degrees SW. Find the time required for the...

Homework Statement S is a vector 24.3 units in magnitude and points at an angle of 54.8 degrees below the negative x-axis. T is a vector 18.8 units in magnitude and points at an angle of 37.7 degrees above the positive x axis. Find the resultant of the two vectors by resolving into rectangular...

I know that pi*r^2 isn't the volume of the sphere but I couldn't remember the formula for the volume of a sphere and regardless, I'm still not sure how to find the percent uncertainty, because my physics teacher isn't very clear when explaining things and it's really difficult to get the just of...

It doesn't say. That's all the information it gives. That's why I was confused.

Homework Statement What, roughly, is the percent uncertainty in the volume of a spherical beach ball whose radius is r=5.60±0.05m? Homework Equations ∏r^2 The Attempt at a Solution

Homework Statement Approximate uncertainty in the area of a circle of radius 5.5×10^4 cm? Homework Equations πr^2 The Attempt at a Solution