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1. Physics

A projectile is shot horizontally at 34.5m/s from the edge of a 55.0metre building a) Determine the height of the projectile from the ground after 2.0 seconds. b) Calculate the velocity of the projectile when the projectile reaches the ground.
2. physics

When you hold an insect at the near point of your eye it subtends an angle of 5.00 x 10^-3 rad. Determine the angular size (magnitude only) of the insect when viewed through a microscope that has an angular magnification with a magnitude of 145.
3. Maths Problem

Need Help Dan and Ellen started jogging at the same time along the route shown below. Both did not change their speeds throughout. after 35 min, Dan was at the halfway point and Ellen was 300 metres behind. Dan reached the end point 5 min before Ellen.
4. Math

2. A rectangle whose perimeter is 80 m has an area of 384 m^2. Find the dimensions of the rectangle. Solve it as a polynomial.
5. Math

The length of a rectangle is 11 cm more than its width. The area of the rectangle is 2040 cm^2. Find the dimensions of the rectangle.