According to Newton's second law of motion, the acceleration of an object is directly proportional to-
- AThe inverse of the object's mass
- BThe force acting on the object
- CMass of the object
- DMore than one of the above
- ENone of the above
Show answer and explanation
Correct answers: (b) The force acting on the object or (d) More than one of the above
Explanation
By Newton's second law, a = F/m: acceleration is directly proportional to the force and inversely proportional to the mass.
Being inversely proportional to the mass is the same as being directly proportional to 1/m, so option (a) is true as well. The book's key is (b).
a = F/m, so acceleration is also directly proportional to the inverse of the mass, which makes (d) right as well; the book's key is (b). Both are accepted here.