Please help before sunday its finals week and im stressing out!! Please write the number to the question you answer its 40 points for whoever can answer them all. 60. What did Copernicus state about Earth’s motion?

61. An object is traveling at a constant velocity of 11 m/s when it experiences a constant acceleration of 1.5 m/s2 for a time of 14 s. What will its velocity be after that acceleration?

62. An object is thrown vertically up with a velocity of 35 m/s. What was the maximum height it reached?

63. What is Newton’s first law of motion (Law of inertia)?

64. A force of gravity between the sun and its planets holds the planets in orbit around the sun. If that force of gravity suddenly disappeared, in what kind of path would the planets move

65. Does a 2-kilogram bunch of bananas have twice as much inertia as a 1-kilogram loaf of bread? Twice as much mass? Twice as much volume? Twice as much weight, when weighed in the same location?

66. Define inertia?

67. How does the law of inertia apply to objects in motion?

68. What is the difference between mass and weight?

69. Calculate in Newtons the weight of a 2000 kg elephant.
(Weight W = mg)

70. Calculate in newtons the weight of a 2.5 kg melon. What is the weight in pounds?

71. What is friction? What factors affect the force of friction between surfaces?

72. Susie finds she weighs 300N. Calculate her mass.

73. If a woman weighs 500 N on Earth, what would she weigh on Jupiter, where the acceleration of gravity is 26 m/s2?

74. Felicia has a mass of 45.0 kg.
A) What is Felicia’s weight on Earth?

B) What is her mass on Jupiter, where acceleration due to gravity is 26 m/s2?

C) What is Felicia’s weight on Jupiter?

75. Suppose you are on an airplane moving at high speed. If you flip a coin straight up it will land in your lap rather than a great distance behind you. Explain

76. Define Newton’s 1 st Law of Motion with examples

Newton’s 2nd Law of Motion

77. Write down Newton’s 2nd Law of motion in mathematical formula.

78. How does an increase in mass affect acceleration?

79. A 95 N net force is applied to an ice block with a mass of 24 kg. Find the acceleration of the block if it moves on a smooth horizontal surface.

80. A net force of 345 N accelerates a boy on a sled at 3.2 m/s2. What is the combined mass of the sled and boy?

81. If a car can accelerate at 2 m/s2, what acceleration can it attain if it is towing another car of equal mass?

82. If the force is 4000 N, mass 1000 kg, what is the acceleration?

83. How much force, or thrust, must a 30,000-kg jet plane develop to achieve an acceleration of 1.5 m/s2?

84. A 45 kg swimmer starting from rest can develop a maximum speed of 12 m/s over a distance of 20 m. How much net force must be applied to do this?

85. What average net force is required to stop a 4 kg bowling ball in 0.5 s if it’s initially traveling at 10 m/s?

86. A runner exerts a net force of 225 N to accelerate at a rate of 3.0 m/s2. What is the runner’s mass?

87. Why do the freely falling objects with different masses hit the ground at the same time?

88. Why do a coin and a feather in a vacuum tube fall with the same acceleration?

89. A net force of 3000 N is accelerating a 1200 kg elevator upward. If the elevator starts from rest, how long will it take to travel up 15 m?

90. Define terminal speed and terminal velocity.

Newton’s 3rd Law of Motion

91. Define Newton’s 3rd Law of motion with an example.

92. What happens when an object exerts a force on another object?

93. We know that Earth pulls on the moon. Does the moon also pull on Earth? If so, which pull is stronger?

94. Identify the action - reaction force from the followings:
a falling boulder,

Tire pushes on the road

Hammer hitting the nail