Board Thread:General Discussion/@comment-30535075-20170307125524/@comment-33665081-20180613183313

I'm not sure where you pulled that number for the car impact. According to Tony, that car was 3000 lbs and was moving at 40 mph. The formula for kinetic energy is KE=0.5 * mass (in kg) * velocity squared (in meters/sec), which outputs in joules. 1 Joule = 1 Newton * meter, so to get the impact in Newtons, we change lbs to kg, mph to m/s, plug it into the formula, then divide by the distance Peter stopped the car over. Let's say for argument that he stopped the car over one quarter of Tom Holland's height (which is 5'8", or 1.73 m) through bending his legs (making that 0.433 meters, or 17 inches).

3000 lbs=1360.777 kg, 40 mph=17.8816 m/s. KE = 0.5 * 1360.777 * 17.8816^2 = 217555 Joules. Divide by 0.433 meters to get 502436 Newtons. To get your number, he had to have stopped the car over 2.5 cm, or about one inch.

To place those numbers in perspective, weight is measured in Newtons through mass times gravity (? kg * 9.8). So divide each number by 9.8, then multiply by 2.20462 to change back into lbs.

Stopping the car through bending the legs, is the same force as holding 113029 lbs, or 56.5 tons.

It's worth noting that calculator converts newtons into tonnes (which is metric tons, or 1000 kg) rather than tons (which is 2000 lbs). 1 tonne = 2205 lbs.

I can't speak to the boat-holding feat without more data, but the car feat is easy to calculate. It's worth noting that Peter jumped into the path of the car then shot off immediately after without hesitation, indicating that it wasn't that abnormal a feat for him. That would imply that stopping 502 kN of force is relatively casual strength and that he is capable of even greater feats.

Plus comic books and superhero movies aren't known for consistency in what feats they are capable of.