What if this were you ? Newton's first law
Newton's first law tells us that an object in motion stays in motion, and an object at rest stays at rest unless acted upon by an outside force.
Inertia is the resistance an object has to a change in its state of motion. Inertia increases as mass increases.
All cars do have Inertia because mass is the measure of Inertia and all cars have mass. Everything that has mass has Inertia.
Of course, a person always has Inertia too, because a person always has mass.
The
first law of motion affects us when we are in a moving vehicle because, no matter how fast the car is moving, we will be moving that fast also. Things have
the tendency to keep doing what they are currently doing.
As we said before, Inertia
is the tendency to resist the change in motion. So, if you crash your car into something, your body will resist the change in motion and, unless something else stops it first, your body will crash
into the object at the same speed that the car crashed into the object.
Seatbelts and airbags can
help protect people from this danger. Seatbelts safely provide an outside force that can stop or slow down your body when the car stops or slows down airbags work by increasing the
time of impact and decreasing the force of impact thus stopping you
from getting hurt and being killed.
Click HERE to take the test below in a special online format.
1.Which is a unit of mass? a. Pounds b. Kilograms c. Liters d. Newtons
2. If you are in equilibrium your net force is greater than zero. True or false?
3.Volume is the same as mass. True or false?
4.What is the net force if something is speeding up? a. Zero b. Greater than zero c. Less than zero d. None of the above
5.If you toss an object from a space station located in a vacuum of outer space, how will the object move? (neglect all gravitational forces) a. The object won't move at all. b. The object will move forever. c. The object will float down to earth. d. None of the above.
6.What is Inertia? a. A tendency to resist a change in motion. b. Another word for being pregnant. c. State of mind. d. A change in motion.
7.Why, according to Newton's 1st law of motion, is it important to wear a seatbelt? a. An object in motion stays in motion and an object at rest stays at rest unless acted upon by and outside force. b. You could get a ticket. c. It makes the car drive faster. d. People will look up to you.
8. Everything that has mass has inertia. True or false?
9. An object in motion stays in motion unless acted upon by... ? a. an outside force. b. the wind. c. gravity. d. a satellite. . 10. If there were no gravity between the sun and other planets what would happen to them and what path would the planets follow? a. They would move in a straight line at a constant speed and constant velocity. b. They would dissolve. c. They would come together and form 1 planet. d. They would stay in the same place.
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Experiment: When Pigs Fly
What You'll Need Remote control car Pig. Tape. White Board. Signs ( Pig With Seat Belt./Pig Without Seatbelt.) Camera. Driver. Camera Recorder. Sign Holder.
What To Do: 1. Get a remote control car. 2.Get a person driver for the car. 3.Get a digital camera. 4.Get someone to operate the camera. 5. Make two signs. One should read “Pig with seatbelt” The other one should read “Pig without seatbelt” 6.Get someone to hold the signs. 7.Get white board for the car to crash into. 8.Take a picture of the pig with a seatbelt on. 9.Take a picture of the pig without a seatbelt on. 10.Started to record the with the camera . 11.Drive the car with the pig without a seatbelt on into the white board. 12.Then drive the car with the pig that had the seatbelt on into the white board.
What To Notice: The next thing you will notice is that the Pig on the car that has no seatbelt on keeps going until it hits the white board because no outside stopping force such as the seatbelt which would prevent it from staying in motion.
Further Questions: 1.What do you thing would happen if the car was going slower? 2.What if the pig were heavier? 3.What would happen to the unbelted pig if you had a longer approach before crashing into the board?
Credits
Cisco (Car Driver/Created the experiment) Stephen (Camera Operator/Helped create the experiment) Regan (Sign Holder/White Board holder/Camera supplier) George ( Posting video on website) Class 10A ( Giving us support)
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