Physics, 28.01.2020 16:56 bellabarfield4286
Question 2 unsaved
which has the most inertia?
question 2 options:
a sports car going 210 mph around the track
your pet dog/cat/horse/bird/fish moving at their fastest speed
a cruise ship docked in a port
a pebble travelling through space at 90,500,000 km/s
question 3 unsaved
what unit must be used when measuring mass?
question 3 options:
gram
pound
liter
seconds
what unit is used for acceleration?
question 4 options:
m/s
m/s2
ft/min
none of the above
question 5 unsaved
what unit do we use for force?
question 5 options:
pounds
galileos
newtons
none of the above
question 6 unsaved
how much force is necessary when gretzky accelerates a 1.04 kg hockey puck at 987 m/s2?
question 6 options:
0.01 n
94.9 n
1030 n
none of the above
question 7 unsaved
the acceleration of the munster’s car is 9.71 m/s2 when he applies 5050 n of net force (by way of the engine). what is the mass of his car in kilograms?
question 7 options:
520 kg
49,000 kg
0.0019 kg
none of the above
amber applies a net force of 35 n to pull her younger brother (32 kg) in a wagon (3 kg). at what rate does the wagon accelerate?
question 8 options:
1.09 m/s2
0.91 m/s2
1.00 m/s2
it doesn't accelerate
question 9 unsaved
when a car stops suddenly, the groceries in the trunk tend to keep moving
question 9 options:
backward
forward
to the left
to the right
question 10 unsaved
which of the following defines inertia?
question 10 options:
the tendency of an object with mass to resist a change in its motion.
the tendency of mass not to resist any change in its motion.
the tendency of a mass-less object to resist a change in its motion.
the tendency of objects to speed up or slow down.
the tendency of an object with a weight to resist a change in its motion.
Answers: 3
Physics, 22.06.2019 07:30
30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve
Answers: 1
Physics, 22.06.2019 11:30
You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?
Answers: 2
Physics, 22.06.2019 19:30
Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.
Answers: 1
Physics, 22.06.2019 20:00
Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?
Answers: 1
Question 2 unsaved
which has the most inertia?
question 2 options:
a...
which has the most inertia?
question 2 options:
a...
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