6. The area under a graph of the net force ys acceleration represents the mass 7
ID: 1788211 • Letter: 6
Question
6. The area under a graph of the net force ys acceleration represents the mass 7. The time required for a bullet fired horizontally to reach the ground is the same as if it were from rest from the same height. 8. When air resistance does not affect the motion of a projectile, its horizontal and vertical nts of velocity remain constant. 9. angertial acceleration is always perpendicular to the centripetal acceleration vector e slope of a position versus time graph gives information about an object's acceleration. 11. It 12. The mass of an object on earth is different from its mass on 13.n order to get an object moving, you must push harder on it than it pushes back onyou. 14. The Si unit for weight is kgm/s for a body to have a zero velocity and nonzero acceleration 15. The kinetic coefficient of friction is always less than the static coefficient offriction 16. The weight of astronauts in the International Space Station orbiting the earth is zero because they in a weightless environment. are 17. An object moving with variable speed along a circular path experiences variable radialacceleration 18. Due to the rotational effects of the earth, you feel slightly heavier than your realweight. 19. The normal force is an example of a passive force 20. is a fundamental force of nature whose extent of influence is shortrangeExplanation / Answer
Q6. force = mass x acceleration
so slope of the force vs acceleration graph represents mass and not area.
so answer is false.
Q7. the answer is true.
because under both cases, the bullet is under acceleration due to gravity and the vertical distance to be travelled is same. Hence, time taken will be same.
Q8. the answer is false.
the horizontal component will remain same but the vertical component will undergo change as it is subject to acceleration due to gravity.
Q10. the answer is false.
Slope of position vs time gives velocity.
Q11. the answer is true.
If a stone /object is thrown upwards, at the top most height the velocity will be zero but it is still under acceleration due to gravity.
Q13.the answer is false.
the forces described here are action-reaction pairs and they are internal in nature and has to be equal. For an object to move, the net external force should be greater than zero.
q18. the answer is false
Due to rotational effect, the value of g ( acceleration due to gravity) decreases. Hence, we should feel lighter and not heavier than real weight.
Q20. As long as earth's attraction is there, gravity force will act. Hence, this can not be short range.
answer is false.
all the best in the course work
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.