Newton's second law Knowledge-Based Download PDF

Questions

1. 1.

   What is the magnitude of the constant net force required to bring a 1200 kg car traveling at 20 m/s to a complete stop over a time interval of 5.0 s?

   • A) 2400 N
   • B) 4800 N
   • C) 12000 N
   • D) 24000 N
2. 2.

   A 4.0 kg cart on a frictionless horizontal surface is acted upon simultaneously by two opposing horizontal forces: a 26 N force directed to the right and a 10 N force directed to the left. What is the magnitude of the acceleration of the cart?

   • A) 2.5 m/s²
   • B) 6.5 m/s²
   • C) 4.0 m/s²
   • D) 9.0 m/s²
3. 3.

   A constant net force of 35 N accelerates an object along a frictionless surface at 7.0 m/s^2. What is the mass of the object?

   • A) 0.20 kg
   • B) 28 kg
   • C) 245 kg
   • D) 5.0 kg