Question

A car makes a trip along a straight line without changing direction. The average speed of the entire trip is 52 mile/hour and the entire time is 75 minutes. In the first segment it moves through 22 miles at an average speed of 40 mile/hour. Find the car's average speed in the rest of the trip. (1 hour = 60 minutes)

Answer #1

A car travels along a straight line at a constant speed of 44.5
mi/h for a distance d and then another distance d in the same
direction at another constant speed. The average velocity for the
entire trip is 33.5 mi/h.
(a) What is the constant speed with which the car moved during
the second distance d? mi/h
(b) Suppose the second distance d were traveled in the opposite
direction; you forgot something and had to return home at the...

State patrol officer saw a car start from rest of the highway on
ramp she radio to head to another officer 25 miles along Highway in
the car which location of the second officer 22 minutes later it
was clocked going 60 miles an hour the driver of the car was given
a ticket for exceeding the 60 mile an hour speed limit why cant the
officer conclude that the driver exceeded the speed limit?
Determine whether to use The...

A car is speeding at 60 miles per hour along a winding coastal
highway. The posted speed limit is 45 miles per hour. A police
officer begins to chase the car 5 minutes after the speeding car
passes. The police officer travels at a rate of 75 miles per
hour

You drive due east down a perfectly straight freeway for 39
minutes at 0.8 miles per minute. Then you get off at a rest stop
and have lunch, which takes 28 minutes. Then you get back on the
freeway, which is still perfectly straight, and drive for another
54 minutes at 0.9 miles per minute in the same direction (east).
The length of the on and off ramps, and the distance to the rest
stop, are very small and should...

Two cars travel in the same direction along a straight highway,
one at a constant speed of 55 mi/h and the other at 60 mi/h.
(a) Assuming they start at the same point, how much sooner does
the faster car arrive at a destination 14 mi away? min
(b) How far must the faster car travel before it has a 15-min
lead on the slower car? mi

The speed of car, moving along a straight line (one-dimensional
motion), will always slow down in which one of the following
situations?
A. acceleration is negative
B. velocity is negative
C. velocity is negative and acceleration is positive
D. velocity and acceleration are both negative

ch 6
1:
It is generally a good idea to gain an understanding of the
"size" of units. Consider the objects and calculate the kinetic
energy of each one.
A ladybug weighing 37.3 mg
flies by your head at 3.83 km/h
.
×10
J
A 7.15 kg
bowling ball slides (not rolls) down an alley at 17.5 km/h
.
J
A car weighing 1260 kg
moves at a speed of 49.5 km/h.
5:
The graph shows the ?-directed force
??...

21) A person carries a 25.0-N rock through the path shown in the
figure, starting at point A and ending at point B. The total time
from A to B is 1.50 min. How much work did gravity do on the rock
between A and B?
A) 625 J
B) 20.0 J
C) 275 J
D) 75 J
E) 0 J
22) A person carries a 2.00-N pebble through the path shown in
the figure, starting at point A and...

Question 1
Science affecting our daily lives is exemplified by:
relying on hunches to solve crimes.
using DNA evidence in criminal investigations.
seeking the help of people with psychic visions in police
work.
relying entirely on preconceptions to identify people who may
have committed crimes.
4 points
Question 2
When an object’s velocity changes, which of the following must
have occurred?
A unbalanced force acted on the object.
An balanced force acted on the object.
The object started to deviate...

Part I. Indicate whether true or false (T or F).
____ Storm water detention ponds typically are designed to
regulate the outflow peak rate at or below a single target value,
such as the pre-development (pre-land use change) peak runoff rate
for a specified return period event. Detention storage alters the
peak but not the volume of the outflow hydrograph.
_____ Typical rating curves for weirs are concave upward.
Typical rating curves for orifices are concave downward.
____ A sediment...

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