Q: AN OBJECT IS MOVING PAST YOU IN A STRAIGHT LINE WITH A CONSTANT SPEED. YOU CAN CONCUDED
A. THAT THERE IS A CONSTANT FORCE IN THE DIRECTION OF MOTION
B. THAT THERE ARE NO FORCES ACTING ON THE OBJECT
C. THAT THE NET FORCE ON THE OBJECT IS ZERO
D. NONE OF THE ABOVE
Q#2
IF YOU DOUBLE THE FORCE APPLIED TO AN OBJECT, THE ACCEERATION
A. STAYS THE SAME
B. DOUBLES
C. CUTS IN HALF
1. Newton’s 1 law states that if the net force (the vector sum of all forces acting on an object) is zero, then the velocity of the object is constant.
Ans. B (and C
2. Newton’s 2 law F =ma
Ans. B
To answer the first question, let's understand the scenario described. An object is moving past you in a straight line with a constant speed. We can use Newton's first law of motion to analyze this situation.
According to Newton's first law, an object will continue to move at a constant velocity unless acted upon by an external force. In this case, if the object is moving with a constant speed and there are no changes in its motion, we can conclude that the net force on the object is zero.
Therefore, the correct answer to the first question is C. That the net force on the object is zero.
Now let's move on to the second question. If you double the force applied to an object, we can determine the effect on its acceleration. To do this, we can reference Newton's second law of motion.
Newton's second law states that the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. Mathematically, this can be written as:
a = F / m
Where:
a = acceleration
F = net force applied
m = mass of the object
If we keep the mass constant and double the force applied (F), the equation becomes:
a = (2F) / m
This simplifies to:
a = 2F / m
So, doubling the force results in doubling the acceleration. Therefore, the correct answer to the second question is B. The acceleration doubles.
To summarize:
1. The correct answer to the first question is C. That the net force on the object is zero.
2. The correct answer to the second question is B. The acceleration doubles.