An object is dropped from rest a distance d near the surface of Earth and takes time t. If the same object is dropped from rest from a different height and takes time 2t, it must have fallen a distance 1/2 d O4 d O 1/4 d O2d Od

Q: A newly discovered planet has a radius of 4.7×106 m and a mass of 5.5×1024 kg . If a rock on this…

A: Given : Radius  of the Planet, R =  4.7×106 m, Mass of the Planet, M =  5.5×1024 kg,  Required :…

Q: A hypothetical planet has a mass 2.80 times that of Earth, but has the same radius. What is g, the…

A: The acceleration due to gravity at the surface of the Earth is given by,

Q: Far in space, where gravity is negligible, a 425 kg rocket traveling at 95 m/s fires its engines.…

A: Far in space, where gravity is negligible,Mass of rocket M =  425 kgVelocity of rocket =95 m/sAlso…

Q: A feather is dropped from rest on the surface of an unknown planet without an atmosphere from a…

A: Distance to be travelled is h = 1.60 m Initial speed is u = 0 m/s Acceleration is a = 1.34 m/s2…

Q: A man stands on the top of a 725 m building and drops a coin from the top of the building. How fast…

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Q: A particle travels around a circular path having a radius of 38 m. If it is initially traveling with…

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Q: DATA ANALYSIS 7. In an experiment to detemmine how the free fall acceleration g varies with altitude…

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Q: A distant large asteroid is detected that might pose a threat to Earth. If it were to continue…

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Q: 3 1 1 3 4 5 t (s) By how much does the velocity change between t = 1 s and t = 5 s? It decreases by…

A: Here we will try to find change in velocity when time equals t1=1sec to t2 = 5sec  Which will be  =…

Q: What is the velocity of a penguin that swims 90 meters through the water in 12 minutes?

A: Solution:  Use the formula for velocity:  V = distance/time  Now,

Q: ich is the Maximum

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Q: An object falls freely from rest on a planet where the acceleration due to gravity is 18 m/s². After…

A: The kinematic expression to calculate speed at later time isv=u+gt=0+18 ms23.9 s=70.2 ms

Q: weight

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Q: Planet Roton, with a mass of 3.25 x 1024 kg and a radius of 2700 km, gravitationally attracts a…

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Q: Planet Roton, with a mass of 9.00 x 1024 kg and a radius of 3600 km, gravitationally attracts a…

A: Given that the value of mass of the planet rotton and also given the radius. Then We have to…

Q: The carth moves around the sun in a nearly circular orbit of radius 1.50 x 1011m. What is the…

A: The radius of the circular orbit, r=1.50×1011 m   The time period, t=1.58×107 s

Q: An inventor wants to launch small satellites into orbit by launching them straight up from the…

A: Given Speed vf  = 500 m/s Height h = 400 km

Q: 4. 5 6. 9 T(s) What is the object's average velocity between t = 0 and t = 3 s? 1 m/s 2 m/s 9 m/s 3…

A: Average velocity is the total displacement upon total time.  For time upto 3s, we have to calculate…

Q: Question: The position of an object moving along the x-axis is given by x = 5.0 - 4.0t + 2.0t² How…

A: Given: The position function of an object with time is x=5-4t+2t2.

Q: The Moon has a mass 7.35 × 1022 kg of and a radius of 1740 km. Air resistance can be neglected on…

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Q: If A = (6 m)i - (8 m) then 47 has magnitude: O 10 m O 56 m O 40 m 0-8 m 08m

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Q: A space shuttle is in orbit about the earth at an altitude where the acceleration due to gravity is…

A: Given: The acceleration due to gravity is 8.7 m/s2. The radius of the earth is 6.4x106 m.

Q: At what speed does a meteorite, whose speed is very small while it's far away from the Moon, fly to…

A: When meteorite is far away, total mechanical energy=0 when it is near the moon total mechanical…

Q: The value of g at Earth's surface is about 10m/s2. What is the value of g at a distance of twice…

A: The expression for the acceleration due to gravity (g) of earth is written as,

Q: You shoot a ball straight up with an initial speed of 8490 m/s. When it reaches a height of 4.0 x 10…

A: Given, v0=8490 m/sh=4.0×106 m

Q: If you are sitting at the equator on Earth, what would your average speed be knowing that the radius…

A: Given: Earth's radii, R=6.37×106  m. Standard data: Gravitational constant, G=6.7×10-11 Nm2/kg2…

Q: How long will it take a rock dropped from 2.0 m above the surface of Mars to reach the ground?

A: Initial height of rock S1=2mInitial velocity of rock u=0 msacceleration due to gravity on surface…

Q: The distance traveled (approximate) in the first fifty seconds.

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Q: G = 6.67 E−11 N*m2/kg2, mass of the Earth is 5.98 E 24 kg, mass of the moon is 7.35 E 22 kg, average…

A: Given data:  Gravitational force (Fg) = 1.98×1020 N Mass of the moon (m) = 7.35×1022 kg Distance…

Q: An object is dropped from rest a distance d near the surface of Earth and takes time t. If the same…

A: The initial velocity of the object u=0 m/s When it falls from a height d its acceleration is a=9.8…

Q: A rocket is launched and attains a speed of 5700_m/s when 63000_m above the surface of the Earth. If…

A: The radius of the earth at certain height is, r=6371000 m+63000 m=6434000 m

Q: An object is dropped from rest a distance d near the surface of Earth and takes time t. If the same…

A: Given data:  A object dropped from rest  Initial velocity (u) = 0 Original time = t Original…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!