Pull-Back Cars

(1 review)
• Pair of Pull-Back Cars
Item #: ROB-340
• Out of Stock
Torque, speed, and friction can influence the distance an object travels.

Description

This simple and fun demonstration teaches how torque, speed, and friction can influence the distance an object travels. So many interesting physics concepts can be taught using these two pull back cars; one with high torque (low gear) and the other with low torque (high gear). When pulled back the same amount and then released, both cars travel approximately the same distance, but one gets there in a hurry, while the other takes its time. Approx. 5 cm (2") long. Styles may vary.

Lesson Ideas

Reviews

1 review
Pull-back car
Feb 25, 2019
The pullback car allows our students to easily discover concepts of speed, acceleration, and conversion of energy. During rolling of the wheels rearward, potential energy is added to the car's spring motor. Upon release, the car's ingenious transmission shifts into high gear to propel the car several meters along the floor. Some of the spring's energy is changed into kinetic energy of the car, illustrating the principal of energy conversion. Students love to 'race' their cars and to compete with distances, speeds, and times of travel.
Evan Jones

1   0

NGSS

This product will support your students' understanding of the Next Generation Science Standards (NGSS)*, as shown in the table below.

 Elementary Middle School High School K-PS2-1 Students can plan and conduct an investigation using the Pull-Back Cars to compare the effects of different strengths or different directions of pushes and pulls on the motion of an object. 3-PS2-2 Students can make observations and/or measurements of the Pull-Back Cars motion to provide evidence that a pattern can be used to predict future motion. MS-PS2-2 Students can plan and conduct an investigation using the Pull-Back Cars to provide evidence that the change in an object's motion depends on the sum of the forces on the object and the mass of the object. MS-PS3-5 Using the Pull-Back Cars, students can develop an investigation and model to describe that when the arrangement of objects interacting at a distance change, different amounts of potential energy are stored in the system. HS-PS2-2 Students can plan and conduct an investigation using the Pull-Back Cars to use mathematical representation to support the claim that the total momentum of a system of objects is conserved when there is no net force on the system. HS-PS3-3 Students can use the Pull-Back Cars to test a design, build, and redefine a devise that works with given constraints to convert one form of energy into another form of energy.

Suggested Science Idea(s)

K-PS2-1
3-PS2-2
MS-PS2-2
HS-PS2-2

Students can plan and conduct an investigation using the Pull-Back Cars to demonstrate forces and energy release.

* NGSS is a registered trademark of Achieve. Neither Achieve nor the lead states and partners that developed the Next Generation Science Standards were involved in the production of, and do not endorse, this product.

Q & A