4 How much force is needed to accelerate a toy car of mass 8 kg at 2m/s?? 2. A trolley of mass 20 kg was originally at rest on a smooth horizontal surface. By how much will it accelerate if a pulling force of 22 N is applied on it horizontally? 3. What is the weight of a 60 kg boy on the surface of the Earth? Take g = 10 m/s?. 4. A 90 kg body is taken to a planet where the acceleration due to %3D gravity is 2.5 times that of the earth. What is the weight of this body on the surface of this planet? Take g = 10 m/s.

4 How much force is needed to accelerate a toy car of mass 8 kg at 2m/s?? 2. A trolley of mass 20 kg was originally at rest on a smooth horizontal surface. By how much will it accelerate if a pulling force of 22 N is applied on it horizontally? 3. What is the weight of a 60 kg boy on the surface of the Earth? Take g = 10 m/s?. 4. A 90 kg body is taken to a planet where the acceleration due to %3D gravity is 2.5 times that of the earth. What is the weight of this body on the surface of this planet? Take g = 10 m/s.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A 80 kg person stands on a weight scale in a elevator. The elevator is moving up with a acceleration of 6 meter per second square. The normal force on the person is: a. 1264 N b. 784 N c. 1184 N d. 80 kg e. 480 N
Q8
Suppose you are flying in an airplane (7500 kg) at an altitude of 11km above the Earth's surface. a. What is the attaracting force between earth and airplane? b. What is the acceleration of airplane? c. Find the time need the aiplane go around the earth?
Eric with a mass of 65 kg starts going down on an elevator. It starts accelerating downward from rest at 2.5 m/s. The elevator's mass is 1185 kg. Assume upward is positive. Round all answers to the whole number. 1. There are forces acting on the system. 2. The weight of the system is N. 3. The tension of the cable is N. 4. The elevator moves m after 3.0 s.
6. Newtons Laws a. Write Newton's First law.. b. Write Newton's Second law. c. Write Newtons Third law. 7. A bowling ball and a feather are dropped from a height of 100 ft. The bowling ball weighs 12 Ibs and the feather weighs 3 ounces. a. What is the Force (in Newtons) of both objects? b. The value of g is varies depending on what planet you are on. Bigger planets have a larger value of g. The value of g on the moon is 1.62 m/s². Calculate the forces of these objects falling on the moon.
how to do?
A car of mass 1200 kg climbs a 300 hill with vertical height of 100 m. If the car has a net forward thrust of 7000 N, what is the speed of the car at the top of the hill? a. 7.13 m/s^2 b. 6.45 m/s^2 c. 5.83 m/s^2 d. 4.52 m/s^2 e. 3.97 m/s^2
A car changes its velocity from 20 m/s [N] to 20 m/s [S] in 5.5s. If the mass of the car is 1500 kg what is the net force acting on it? Thanks!
R3
A 2200 kg truck has put its front bumper against the rear bumper of a 2400 kg SUV to give it a push. With the engine at full power and good tires on good pavement, the maximum forward force on the truck is 18,000 N.a. What is the maximum possible acceleration the truck can give the SUV?b. At this acceleration, what is the force of the SUV’s bumper on the truck’s bumper?
2. You drop a single coffee filter of mass 1.7 g from a very tall building, and it takes 52 s to reach the ground. In a small fraction of that time, the coffee filter reached terminal speed. a. What was the upward force of the air resistance while the coffee filter was falling at terminal speed? b. Next, you drop a stack of five of these coffee filters. What was the upward force of the air resistance while this stack of coffee filters was falling at terminal speed? c. Again, assuming that the stack reaches terminal speed very quickly, about how long will the stack of coffee filters take to hit the ground? (Hint: Consider the relation between speed and the force of air resistance.)
Point A is located somewhere in space. If the acceleration due to gravity at point A is given by: g, = (2i +3j) m/s?. The magnitude of the weight of a 3 kg object placed at point A is: A. 7.21 N B. 10.8 N C. 3.6 N D. 25.8 E. Zero rch