Velocity functions A projectile is fired vertically upward into the air, and its position (in feet) above the ground after t seconds is given by the function s ( t ) . a. For the following functions s ( t ), find the instantaneous velocity function v ( t ). (Recall that the velocity function v is the derivative of the position function s .) b. Determine the instantaneous velocity of the projectile at t = 1 and t = 2 seconds. 32. s ( t ) = − 16 t 2 + 128 t + 192
Velocity functions A projectile is fired vertically upward into the air, and its position (in feet) above the ground after t seconds is given by the function s ( t ) . a. For the following functions s ( t ), find the instantaneous velocity function v ( t ). (Recall that the velocity function v is the derivative of the position function s .) b. Determine the instantaneous velocity of the projectile at t = 1 and t = 2 seconds. 32. s ( t ) = − 16 t 2 + 128 t + 192
Solution Summary: The author explains how to find the instantaneous velocity of the function v(t).
Velocity functions A projectile is fired vertically upward into the air, and its position (in feet) above the ground after t seconds is given by the function s(t).
a. For the following functions s(t), find the instantaneous velocity function v(t). (Recall that the velocity function v is the derivative of the position function s.)
b. Determine the instantaneous velocity of the projectile at t = 1 and t = 2 seconds.
Use the information to find and compare Δy and dy. (Round your answers to four decimal places.)
y = x4 + 7 x = −3 Δx = dx = 0.01
Δy =
dy =
4. A car travels in a straight line for one hour. Its velocity, v, in miles per hour at six minute intervals is shown
in the table. For each problem, approximate the distance the car traveled (in miles) using the given method,
on the provided interval, and with the given number of rectangles or trapezoids, n.
Time (min) 0 6 12 18|24|30|36|42|48|54|60
Speed (mph) 0 10 20 40 60 50 40 30 40 40 65
a.) Left Rectangles, [0, 30] n=5
b.) Right Rectangles, [24, 42] n=3
c.) Midpoint Rectangles, [24, 60] n=3
d.) Trapezoids, [0, 24] n=4
The bracket BCD is hinged at C and attached to a control cable at B. Let F₁ = 275 N and F2 = 275 N.
F1
B
a=0.18 m
C
A
0.4 m
-0.4 m-
0.24 m
Determine the reaction at C.
The reaction at C
N Z
F2
D
Elementary Statistics: Picturing the World (7th Edition)
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