Acrane cable can support a maximum load of 20,000 kg. if a bucket has a mass of 4,000 kg and gravel has a mass of 1,500 kg for every cubic meter, how many cubic meters of gravel (g) can be safely lifted by the crane?

10.67 kg of gravel can be safely lifted by the crane

Step-by-step explanation:

Maximum load that a crane can support = 20000 kg.

Bucket has a mass = 4000 kg

Gravel has a mass = 1500 kg for every cubic meter.

Let the volume of gravel is = g cubic meter

Therefore, mass of the gravel = 1500g kg

Now we form an equation to show the weight that the crane cable can support

Mass of Bucket + mass of Gravel = Total mass that a lift can support

4000 + 1500g = 20000

1500g = 20000 - 4000

1500g = 16000

g = 10.67 kg

Therefore, 10.67 kg of gravel can be safely lifted by the crane.

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

noncoplanar points are points that do not lie on the same line.