If a rocket-powered sled is accelerated to a speed of 444 m/s in 1.8s, then what is the distance that the sled travels?
So, my given:
vf= 444 m/s
t= 1.8 s
I don 't know what equation to use to find distance. I tried:
d=vi+1/2*at2 , but that didn't work. I just really don't know what...
A feather is dropped on the moon from a height of 1.40 meters. The acceleration of gravity on the moon is 1.67 m/s2 Determine the time for the feather to fall to the surface of the moon.
So, I wrote my given:
d=1.4 m
a= 1.67 m/s2
both initial and final velocity= 0
I know I am looking...
So I am looking for final velocity and it's not zero?
If so, I got it to be .61 m/s, but that seems awfully low, so I don't know. I used this equation:
vf= vi2+2*a*d
Okay, how is this?
a) 8 s
And then for b, I'm not sure what I'm looking for to be how fast. I would have thought velocity, but they gave me velocity, so that's not it. And it can't be acceleration because that's gravity. So I am confused on what I'm looking for.
A ball is thrown with an initial upwards velocity of 40.0 m/s.
a)How long is it in the air?
b)How fast is it going when it hits the ground?
I decided my given was:
vi= 40.0 m/s
vf=0 m/s
a= -9.8 m/s2
I solved for time and distance using the big four and for
a)4s
b)81.6m
Is this...
A chipmunk drops an acorn from a branch 6.0 m above the ground.
a) How long is it in the air?
b)How fast is it going when it hits the ground?
I decided my given was
a=9.8m/s2
d= 6.0 m
vi= 0 m/s
So I used the distance formula (d=vi+1/2*a*t2) and solved for time. I got about 1.1 s.
For the next...
Homework Statement
I am looking for an angle, using Law of Cosines. I am trying to solve for C.
Homework Equations
R^2= a^2+b^2- (2 X a X b X cos C)
The Attempt at a Solution
These are the numbers I am using, plugged into the Law of Cosines:
80^2= 450^2+ 373^2-(2 X 450 X 373 X...
Homework Statement
A boat is placed in a river, which has a current velocity, Vc of 3.0 km/h east, relative to the shore. Relative to the river, the rower can maintain a boat speed, Vb of 6.0 km/h.
A) Draw a diagram that could be used to find the boat's velocity relative to the shore if...
I am having a lot of trouble with my homework. If anyone could help me, it would be much appreciated.
The Smith's go on vacation. They travel 16.0 km north/west; then turn 27 degrees to the left and go 135 km; then 294 km south/west. What is their displacement from home?
So I found the X...
I got this as my final triangle, but I don't know how to go about finding an angle. I also don't understand why it isn't negative when they were traveling to the left and down. I'm sorry, I'm really trying, just having a lot of trouble...