A shaving or makeup mirror is designed to magnify your face by a factor of 1.40 when your face is placed 20.0cm in front of it.

a) What type of mirror is it? (I got concave)
b) Described the type of image that it makes of your face. (I got upright, virtual, and magnified)
c) Calculate the required readius of curvature for the mirror. (1.40 m)
d) draw a ray diagram ( I can't figure this one out )

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .