Homework Statement
A cannon is placed at the bottom of a cliff 85 m high. If the cannon is fired straight upward, the cannonball just the reaches the top of the cliff.
a) Calculate the initial speed of the cannonball.
b) Suppose a second cannon is placed at the top of the cliff and fired...
Homework Statement
A jet is flying at 600 mi/h in a direction of 45 degrees North of West. 2.5 minutes later it is flying at 450 mi/h in a direction of 30 degrees North of East.
a) Sketch a vector diagram labeling Vi, Vf, and ∆V.
b) Calculate the average velocity vector in unit-vector...
a) since i have found the magnitude, i will need to find the displacement
the displacement of the clock moving the minute hand (20cm) from 6pm to 9pm is equal to the parimeter of the circle from 6pm to 9pm
P=2∏r = 2∏(20) = 40∏= 125.60
then i will have to divide by 4 to get the...
Sorry for not posting my work earlier.
So far I have...
a) On any given clock, from 6PM to 9PM, the minute hand is 20cm. So applying a^2+b^2=c^2 with a= 20cm and b=20cm...I get the displacement value of 28.2842cm
b) average velocity = Δd/Δt = 28.2842/(3-0) =9.4280 cm/h
c) average...
A clock has a 20cm minute hand. From the 6PM mark to the 9PM mark, for the tip of the minute hand, calculate:
a) the displacement vector in unit-vector notation
b) the average velocity vector in unit-vector notation
c) the average acceleration vector in unit-vector notation
d) calculate...