The diagram below shows some of the forces acting on a car of mass 800kg. On Earth, the weight of 1 kg is 10N.
Direction of motion
Driving force
Po
Total drag force
3000N
Weight
Describe the difference between the weight and the mass of the car.

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?

Avector of magnitude 2 cannot be added to a vector of magnitude 3 so that the magnitude of the resultant is a. zero b. 1 c. 3 d. 5 e. 7