Going Up An elevator cab in a New York hotel has a total run of 185 m. Its maximum speed is 261 m/min. Its acceleration (both speeding up and slowing down) has a magnitude of 1.21 m/s2.
(1) How far does the cab move while accelerating to full speed from rest?
v = 261m/min
= 261m/min *...
Homework Statement
Stopping a Salmon The tension at which a fishing line snaps is commonly called the line's "strength." What minimum strength is needed for a line that is to stop a salmon of weight 85 N in 11.6 cm if the fish is initially drifting at 3.0 m/s? Assume a constant acceleration...
Homework Statement
Missile Calculate the drag force on a missile 48 cm in diameter cruising with a speed of 270 m/s at low altitude, where the density of air is 1.2 kg/m3. Assume C = 0.75.
Homework Equations
Fd = -1/2p(v^2)CA
The Attempt at a Solution...
a).
(Ux)* t = Sx
(32cos40)* t = 22
t = 22/(32cos40)
Sy = (Uy)t+0.5(Ay)t^2
= {(32sin40)*[22/(32cos40)]
+0.5*(-9.8)*[22/(32cos40)]^2}m
-4.9*1.0626
= -5.20679
this still seems to be wrong
Homework Statement
You throw a ball toward a wall with a speed of 32 m/s at an angle of 40.0° above the horizontal directly toward a wall. The wall is 22.0 m from the release point of the ball.
(a) How far above the release point does the ball hit the wall?
(b) What are the...
Homework Statement
You throw a ball toward a wall with a speed of 32 m/s at an angle of 40.0° above the horizontal directly toward a wall (Fig. 5-33). The wall is 22.0 m from the release point of the ball.
(a) How far above the release point does the ball hit the wall?
not sure what...
blocks A and B have weights of 45 N and 25 N, respectively.
block A is sitting on a table and block B is attached to block A by a peice of string on a frictionless pulley and block B is hanging off the table. also block C is on top of block A
Figure 6-48
(a) Determine the...
Projected Up an Incline A block is projected up a frictionless inclined plane with initial speed v1 = 3.43 m/s. The angle of incline is θ = 32.5°.
(a) How far up the plane does it go?
(b) How long does it take to get there?
(c) What is its speed when it gets back to the bottom...