a. a bird flies straight from a tree to the ground without changing speeds b. a dog walks at a constant speed along a straight sidewalk c. a girl runs along a straight path the same distance...
a. a bird flies straight from a tree to the ground without changing speeds b. a dog walks at a constant speed along a straight sidewalk c. a girl runs along a straight path the same distance...
acceleration
acceleration
acceleration
I need help with the second part of this question. Please show work so I can see. Thanks. I. The fastest land mammal, the cheetah, can accelerate from 0 mi/hr to 70...
True or false: Newton's laws apply only to reference frames that are not accelerating.
A sinker on a string travels in a circle of radius1.00 m with a constant speed of 2.75 m/s. What is its acceleration?
A force is applied to a 2.3 kg mass and produces 5.5 m/s2 acceleration. What acceleration would be produced by the same force applied to a 5.1 kg mass?
Consider the following descriptions of the vertical motion of an object subject only the acceleration due to gravity. (Note: the acceleration due to gravity is 9.8 m/s2) a. Find the...
A particle is moving with velocity v(t) = t^2 – 9t + 18 with distance, s measured in meters, left or right of zero, and t measured in seconds, with t between 0 and 8 seconds inclusive. The position...
A rifle bullet is fired vertically upwards with a muzzle velocity of 700 m/s. Assuming no air resistance, what height will it reach? How long will it take to reach the ground again?
A boy on a bicycle is going downhill at 16km/h. If his brakes fail and he accelerated at 0.3m/s2, what speed will he attain if the hill is 400m long?
Assuming that the maximum deceleration of a car when full braking is applied is 0.8g, find the length of run required to pull up from a) 50 km/h b) 100km/h
In an interval of 4 seconds a car goes from 10 km/h to 50 km/h. what is the acceleration of the car? a. 40 km/h b. 5 km/h • s c. ...
I was thinking about gravity and isn't it a meters per second per second per second acceleratory force? I mean, as you get close to an object's center of mass the force of gravity gets stronger,...
A particle is moving with velocity v(t) = t^2 – 9t + 18 with distance, s measured in meters, left or right of zero, and t measured in seconds, with t between 0 and 8 seconds inclusive. The position...
Let aT be the tangential component of the acceleration vector of r(t)=<t-sin(t), 1-cos(t), 0>. What is (aT)^2 at t=pi/2? r'(t)=<1-cos(t), sin(t), 0> r''(t)=<sin(t), cos(t),...
Here's what I did but I don't know another way of solving this without using point slope form. (0, 6) (1.5, y) y-y1=m(x-x1) y-6=-2(1.5-0) y-6= -3 y=3m/s velocity =3m/s...
I need to check my answer
On vacation, your 1500kg car pulls a 600kg trailer away from the stoplight with an acceleration of 2.0m/s^2, What is the net force exerted on the trailer, what force does the trailer exert on the...