Question 3 Which direction does gravity point in? M Us Mx Directly downward O Impossible to determine Parallel to the surface, down-leftward Angle 0 from downward

Question 7 A roller coaster car moves on a track with one section that is a vertical circular loop of radius R. When the car is at the top of the loop it just maintains contact with the track. What is the car's velocity at this point? Rg 09/20 Zero R ORg

76-78 please

Q4.

282.3 g12 physics

Midterm Practice A string of constant length is connected with a ball of mass 200 g. The tension of the string is 40 N. The ball is twirled in a circle. What is the centripetal force that exerted on the ball? Select one: a. 19.6 N b. 1.96 N c. 196 N d. 40 N

3 The gravitational force between two objects with masses 9kg and 33kg separated by a distance 5m is x10 N. saved Oa. 49524.75 Ob. 9904.95 question . 79.24 Clear my choice 4 sed d out of A 22kg crate resting on a horizontal surface is pushed as shown. If a force of 69N is required to move the crate the coefficient of static friction ) between the crate and the floor is D Type here to search

Eva Destruction twirls a stone attached to a string 2.0 meters long in a horizontal circle with a speed of 5 m/s. What is the centripetal force and centripetal acceleration of the stone and the string?  Assume a 2kg mass for the stone problem

A 1000 kg race car is traveling at 60 m/s around a curved section of track that has a radius of 300 m. a) what is the cars centripetal acceleration? b)

O Macmillan Learning Mikaela is out for a bike ride on a breezy day. The wind blows out of the west such that it exerts a constant drag force Fdrag of 105 N pointing east. Initially riding north on flat roads, Mikaela traverses a 1.60 km long circular arc at a constant speed that ends with her heading directly into the wind; the arc is a quarter circle that starts pointing north and ends pointing west, as shown in the figure. How much work W does the wind do on her as she rounds this curve from point A to point B? W = J F₁ drag B A N A WE Y S