Final answer:
The force of a 10 kg object on a desktop is 98 N, and the force of a 500 kg car accelerating at 10 m/s^2 is 5000 N. Both calculations are derived from Newton's second law of motion, F = m × a.
Step-by-step explanation:
The force of a 10 kg object sitting on a desktop can be found using the equation for weight, which is the force due to gravity acting on an object. The equation is F = m × g, where F is the force in Newtons (N), m is the mass of the object in kilograms (kg), and g is the acceleration due to gravity (9.8 m/s2 on Earth).
Calculating for a 10 kg mass:
F = 10 kg × 9.8 m/s2 = 98 N
For a 500 kg car that accelerates at 10 m/s2, use Newton's second law of motion, F = m × a to find the force.
F = 500 kg × 10 m/s2 = 5000 N